Selected Papers of  A. AGRACHEV:

1.  On superpositions of continuous functions. Matem. zametki, 1974, v.16, 517--522

2.  A second order optimality principle for time-optimal  problems. Matem. sbornik, 1976, v.100, 610--643
     (with R. Gamkrelidze)

3.  A second order necessary condition for optimality in the general nonlinear case. Matem. sbornik, 1977, V.102

4.  The exponential representation of flows and the chronological calculus. Matem. sbornik, 1978, v.107, 467--532
      (with R. Gamkrelidze)

5  The chronological algebras and nonstationary vector fields. Itogi nauki. VINITI. Problemy geometrii, 1980, v.11, 135--176
    (with R. Gamkrelidze)

6.  Chronological series and Cauchy -- Kovalevska theorem. Itogi nauki. VINITI. Problemy geometrii, 1981, v.12, 165--183
     (with S. Vakhrameev)

7.  Nonlinear control systems of constant rank and bang-bang conditions for extremal controls. Dokl. Acad. Nauk  SSSR,
     1984, v.279, 265--269 (with S. Vakhrameev)

8.  The extremality index and quasi-extremal controls. Dokl. Acad. Nauk SSSR, 1985, v.284, 777--781 (with R. Gamkrelidze)

9.  The Morse index and the Maslov index for smooth control systems. Dokl. Acad. Nauk SSSR, 1986, v.287, 521--524 
     (with R. Gamkrelidze)

10. On reductions of smooth systems, linear in the control. Matem. sbornik, 1986, v.130, 18--34 (with A. Sarychev)

11. Filtrations of a Lie algebra of vector fields and nilpotent approximation of controlled systems. Dokl. Acad.
      Nauk SSSR, 1987, v.295, 777--781 (with A. Sarychev)

12. Computation of the Euler characteristic of intersections of real quadrics. Dokl. Acad. Nauk SSSR, 1988, v.299,
      297--300 (with R. Gamkrelidze)

13. Homology of intersections of real quadrics. Dokl. Acad. Nauk SSSR, 1988, v.299, 493--496

14. Quadratic mappings in the geometric control theory. Itogi nauki.\linebreak VINITI. Problemy geometrii, 1988, v.20, 111--205

15. Topology of quadratic mappings and Hessians of smooth mappings. Itogi nauki. VINITI. Algebra. Topologiya. Geometriya,
      1988, v.26, 85--124

16. Local invariants of smooth control systems. Acta Appl. Math., 1989, v.14, 191--237 (with R. Gamkrelidze, A. Sarychev)

17. Ordinary differential equations on vector bundles and the chronological calculus. Itogi nauki. VINITI. Sovremennye
      problemy matematiki. Novejshie dostigeniya, 1989, v.35, 3--107 (with R. Gamkrelidze,  S. Vakhrameev)

18. The quasi-extremality for controlled systems. Itogi nauki. VINITI. Sovremennye problemy matematiki. Novejshie
      dostigeniya, 1989, v.35, 109--134 (with R. Gamkrelidze)

19. Quadratic mappings and smooth vector functions: the Euler characteristics of the level surfaces. Itogi nauki.
      VINITI. Sovremennye problemy matematiki. Novejshie dostigeniya, 1989, v.35, 179--234 (with R. Gamkrelidze)

20. One more condition for a conditional extremum. Uspekhi Matem. Nauk, 1989, v.44, 189--190

21. Symplectic geometry for optimal control. In the book: Nonlinear Controllability and Optimal Control. H.~Sussmann, Ed.
      Marcel Dekker, 1990, 263--277 (with R. Gamkrelidze)

22.  Symplectic geometry and necessary conditions for optimality. Matem. sbornik, 1991, v.144, 29--45 (with R. Gamkrelidze)

23. Volterra series and groups of permutations. Itogi nauki. VINITI. Sovremennye problemy matematiki. Novejshie
      dostideniya, 1991, v.39, 3--40 (with R. Gamkrelidze)

24. Morse theory and optimal control problems. In the book: Nonlinear Synthesis. C.~I.~Byrnes, A.~Kurzhansky, Ed. Proc. Int.
      Conf. Sopron, Hungary, 5-9 June, 1989. Birkhauser, 1991, 1--11 (with S. Vakhrameev)

25. Newton diagrams and tangent cones to attainable sets. In the book: Analysis of Controlled Dynamical Systems.
      B. Bonnard, B. Bride, J. P. Gauthier, I. Kupka, Eds. Proc. col. Int. Lyon, France, 3-6 juillet, 1990. Birkhauser, 1991,

26. Local controllability for families of diffeomorphisms. Systems and Control Letters, 1993, v.20, 67--76
      (with R. Gamkrelidze)
27. Local controllability and semigroups of diffeomorphisms. Acta Appl. Math., 1993, v.32, 1--57 (with R. Gamkrelidze)

28. Shuffle products and symmetric groups. In the book: Differential Equations, Dynamical Systems, and Control
      Science. A Festchrift in Honor of Laurence Markus. Marcel Dekker, 1994, 365--382 (with R. Gamkrelidze)

29. On abnormal extremals for Lagrange variational problems. Mathematical Systems. Estimation and Control, 1995, v.5,
      87--118 (with A. Sarychev)

30.  Symplectic methods in optimization and control. In the book: Geometry of Feedback and Optimal Control. B.~Jakubczyk,
      W. Respondek, Eds. Marcel Dekker, 1998, 19--77  (with R. Gamkrelidze)

31. Abnormal sub-Riemannian geodesics: Morse index and rigidity. Annales de l'Institut Henri Poincare - Analyse non lineaire,
      1996, v.13, 635--690 (with A. Sarychev)

32. Strong minimality of abnormal geodesics for 2-distributions. J. Dynamical and Control Systems, 1995, v.1, 139--176
      (with A. Sarychev)

*33. Methods of control theory in nonholonomic geometry. Proc. ICM-94, Z\"urich. Birkhauser, 1995, 1473--1483

34. On regularity properties of extremal controls. J. Dynamical and Control Systems, 1995, v.1, 319--324

35. Exponential mappings for contact sub-Riemannian structures. J. Dynamical and Control Systems, 1996, v.2, 321--358

36. Sub-Riemannian metrics on R^3. Proc. Canadian Math. Soc., 1998, v.25, 29--78 (with H. Chakir, J.-P. Gauthier)

37. Sub-Riemannian sphere in Martinet flat case. J. ESAIM: Control, Optimisation and Calculus of Variations, 1997, v.2,
      377--448 (with B. Bonnard, M. Chyba, I. Kupka)

38. Feedback--invariant optimal control theory and differential geometry, I. Regular extremals.
      J. Dynamical and Control Systems, 1997, v.3, 343--389 (with R. Gamkrelidze)

39. On Morse theory for piecewise smooth functions. J. Dynamical and Control Systems, 1997, v.3, 449--469
      (with S. Scholtes, D. Pallaschke)

40. Is it possible to recognize Local Controllability in a finite number of differentiations? In the book:
     Open Problems in Mathematical Systems and Control Theory. Springer Verlag, London, 1999, 15--18

*41. Feedback--invariant optimal control theory and differential geometry, II. Jacobi curves for singular extremals.
       J. Dynamical and Control Systems, 1998, v.4, 583--604

42. On the Dido problem and plane isoperimetric problem. Acta Appl. Math., 1999, v.57, 287--338 (with J.-P. Gauthier)

43. On the equivalence of different types of local minima in sub-Riemannian problems.
      Proc. 37th IEEE Confer. on Decision and Control, 1998

44.  Sub-Riemannian metrics: minimality of abnormal geodesics versus subanalyticity. ESAIM: J. Control, Optimisation,
       and Calculus of Variations, 1999, v.4, 377--403 (with A. Sarychev)

45.  Sub-Riemannian metrics and isoperimetric problems in the contact case. Proc. Int. Confer. Pontryagin-90, 1999, v.3,
       5--48 (with J.-P. Gauthier)

46.  Compactness for sub-Riemannian length-minimizers and subanalyticity. Rend. Semin. Mat. Torino, 1998, v.56,

47.  Lie--Algebraic conditions for exponential stability of switched systems. SIAM J. Control and Optimization, 2001,
       253--269 (with D. Liberzon)

48. On sub-Riemannian caustics and wave fronts for contact distributions in the three-space.
      J. Dynamical and Control Systems, 2000, v.6, 365--395 (with J.-P. Gauthier, V. Zakalyukin)

49.  On subanalyticity of Carnot---Caratheodory distances.  Annales de l'Institut Henri Poincare`
      -- Analyse non lineaire, 2001, v.18, 359--382 (with J.-P. Gauthier)

50.  Strong optimality of a bang-bang trajectory. SIAM J. on Control and Optimization, 2002, v.41, 981--1014
       (with G. Stefani, P. Zezza)

51.  A "Gauss--Bonnet formula" for contact sub-Riemannian manifolds. Russian Math. Dokl., 2001, v.381, 583--585

52.  Geometry of Jacobi curves, I. J. Dynamical and Control Systems, 2002, v.8, 93--140 (with I. Zelenko)

53.  Geometry of Jacobi curves, II. J. Dynamical and Control Systems, 2002, v.8, 167--215 (with I. Zelenko)

54.  On the local structure of optimal trajectories in  R^3. SIAM J. on Control and Optimization, 2003, v.42, 513--531
       (with M. Sigalotti)

55.  Nonholonomic tangent spaces: intrinsic construction and rigid dimensions. E.R.A. Amer. Math. Soc., 2003, v.9, 111--120
       (with A. Marigo)

56.  Navier--Stokes equations: controllability by means of low modes forcing. J. of Mathematical Fluid Mechanics, 2005, v.7,
       108--152  (with A. Sarychev)

57.  Rigid Carnot algebras: classification. J. Dynamical and Control Systems, 2005, v.11, 449--494 (with A. Marigo)

58.  Hamiltonian systems of negative curvature are hyperbolic. Russian Math. Dokl., 2005, v.400,  295--298
      (with N. Chtcherbakova)

59.  On curvatures and focal points of dynamical Lagrangian distributions and their reductions by first integrals. J.
      J. Dynamical and Control Systems, 2005, v.11, 297--327 (with N. Chtcherbakova, I. Zelenko)

60.  An estimation of the controllability time for single-input systems on compact groups. J. ESAIM:COCV, 2006, v.12, 409--441
       (with T. Chambrion)

61.  On feedback classification of generic control-affine systems with one and two-dimensional inputs.
       SIAM J. on Control and Optimization, 2007, v.48, 1431--1460 (with I. Zelenko)

62.  Controllability of 2D Euler and Navier--Stokes equations by degenerate forcing. Commun. Math. Phys., 2006, v.265, 673--697
      (with A. Sarychev)

63.  On finite-dimensional projections of distributions for solutions of randomly forced PDE's. Annales de l'IHP.
      Probabilites et statistiques, 2007, v.43, 399--415 (with S. Kuksin, A. Sarychev, A. Shirikyan)

64.  The Pontryagin Maximum Principle 50 years later. Proceed. Steklov. Math. Inst., 2006,
      Dynamical Systems: Modeling, Optimization, and Control, suppl. 1, S4--S12 (with R. Gamkrelidze)

65.  The curvature and hyperbolicty of Hamiltonian systems. Proceed. Steklov Math. Inst., 2007, v.256, 26--46

66.  Nurowski's conformal structures for (2,5)-distributions via dynamics of abnormal extremals. Proceed. RIMS workshop
      Developments of Cartan geometry and related mathematical problems; Kyoto, 2006, 204--218 (with I. Zelenko)

67.  A Gauss--Bonnet--like formula on two-dimensional almost Riemannian manifolds.
      Discrete and Continuous Dynamical Systems, 2008, v.20, 801--822 (with U. Boscain, M. Sigalotti)

68.  Rolling balls and Octonions. Proceed. Steklov Math. Inst., 2007, v.258, 13--22

**69.  Solid controllability in fluid dynamics. In the book: Instabilities in Models Connected with Fluid Flow. I.
      Springer, 2007, 1--36 (with A. Sarychev)

70.  Smooth optimal synthesis for infinite horizon variational problems. J. ESAIM:COCV, 2009, v.15, 173--188 (with F. Chittaro)

71.  Optimal transport under nonholonomic constraints. Transactions of the Amer. Math. Soc., 2009, v.361, 6019--6047 (with P. Lee)

72.  Controllability on the group of diffeomorphisms. Annales de l'Institut Henri Poincare` -- Analyse non lineaire, 2009, v.26, 2503--2509 (with M. Caponigro)

73.  The intrinsic hypoelliptic Laplacian and its heat kernel on unimodular Lie groups. J. Func. An., 2009, v.256, 2621--2655 (with U. Boscain, J.-P. Gauthier, F. Rossi)

*74.  Any sub-Riemannian metric has points of smoothness. Russian Math. Dokl., 2009, v.79, 1--3

75.  Dynamics control by a time-varying feedback. J. Dynamical and Control Systems, 2010, v.16, 149--162 (with M. Caponigro)

76.  Generalized Ricci curvature bounds for three dimensional contact subriemannian manifolds. Math. Ann., 2014, v.360, 209--253 (with P. Lee)

*77.  Well-posed infinite horizon variational problems. Proceed. Steklov Math. Inst., 2010, v.268, 17--31

78.  Two-dimensional almost Riemannian structures with tangency points. Annales de l'Institut Henri Poincare` -- Analyse non lineaire, 2010, v.27, 793--807 (with U. Boscain, G. Charlot, R. Ghezzi, M. Sigalotti)

79.  Continuity of optimal control cost and its application to weak KAM theory. Calculus of Variations and Part. Dif. Eq., 2010, v.39, 213--232 (with P. Lee)

80.  Invariant Lagrange submanifolds of dissipative systems. Russian Math. Surveys, 2010, v.65, 222--223

81.  On the Hausdorff volume in sub-Riemannian geometry. Calculus of Variations and Part. Dif. Eq., 2012, v.43, 355--388 (with D. Barilari, U. Boscain)

82.  Sub-Riemanian structures on 3D Lie groups. J. Dynamical and Control Systems, 2012, v.18, 21--44 (with D. Barilari)

83.  On robust Lie-algebraic stability conditions for switched linear systems. Systems and Control Letters, 2012, v.61, 347--353 (with Yu. Baryshnikov, D. Liberzon)

84.  Systems of quadratic inequalities. Proceed. London Math. Soc., 2012, v.105, 622--660 (with A. Lerario)

85.  Bishop and Laplacian comparison theorems on 3D contact sub-Riemannian manifolds with symmetry. J. Geom. Anal., 2015, v.25, 512--535 (with P. Lee)

86.  On the space of symmetric operators with multiple ground states. Func. Anal. and its Appl., 2011, v.45, 241--251

87.  Quadratic cohomology. Arnold Math. J., 2015, v.1, 37--58

88.  On conjugate times of LQ optimal control problems. J. Dynamical and Control Systems, 2015, v.21, 625--641 (with L. Rizzi, P. Silveira)

89.  Geodesics and horizontal-path spaces in Carnot groups. Geometry & Topology, 2015, v.19, 1569--1630 (with A. Gentile, A. Lerario)

90.  Tangent hyperplanes to subriemannian balls. J. Dynamical and Control Systems, 2016, v.22, 683--692

91.  Sub-Riemannian curvature in contact geometry. J. Geom. Anal., to appear (with D. Barilari, L. Rizzi)

92.  Intrinsic random walks in Riemannian and sub-Riemannian geometry via volume sampling (with U. Boscain, R. Neel, L. Rizzi)

93.  Volume geodesic distortion and Ricci curvature for Hamiltonian dynamics (with D. Barilari, E. Paoli)

94.  Ensemble controllability by Lie algebraic methods J. ESAIM:COCV, 2016, v.22, 921--938 (with Yu. Baryshnikov, A. Sarychev)

95.  Homotopically invisible singular curves (with F. Boarotto, A. Lerario)

96.  Switching in time-optimal problem. The 3-D case with 2-D control. J. Dynamical and Control Systems, to appear (with C. Biolo)

97.  Switching in time-optimal problem with co-dimension 1 control (with C. Biolo)

* Updated after the publication.  
** Preliminary version.