1. Manifolds, Tensor Analysis, and Applications,;R. Abraham;2nd edition,1988
2. The exponential representation of flows and the chronological calculus,;A. A. Agrachev;Math. USSR-Sb.,1978
3. Control Theory from the Geometric Viewpoint,;A. A. Agrachev;Encyclopedia of Mathematical Sciences,2004
4. Local Controllability of Affine Distributions,;C. O. Aguilar;PhD thesis,2010
5. Geometric interpretations of the symmetric product in affine differential geometry,;M. Barbero-Liñán;Int. J. Geom. Methods Mod. Phys.,2012