1. Gromov M., “Carnot-Carathéodory spaces seen from within,” in: Sub-Riemannian Geometry, Birkhäuser, Basel, 1996, pp. 79–323.
2. Petitot J., Neurogéométrie de la vision. Modèles mathématiques et physiques des architectures fonctionelles, Éd. École Polytech., Paris (2008).
3. Jurdjevic V., Geometric Control Theory, Cambridge Univ. Press, Cambridge (1997) (Cambridge Stud. Math.; V. 52).
4. Agrachev A. A. and Sachkov Yu. L., Control Theory from the Geometric Viewpoint, Springer-Verlag, Berlin (2004).
5. Montgomery R., A Tour of Subriemannian Geometries, Their Geodesics and Applications, Amer. Math. Soc., Providence (2002).