1. A. A. Agrachev and Yu. L. Sachkov, Control Theory from the Geometric Viewpoint (Springer, Berlin, 2004), Encycl. Math. Sci. 87.
2. V. R. Barseghyan, Control of Composite Dynamical Systems and Systems with Multipoint Intermediate Conditions (Nauka, Moscow, 2016) [in Russian].
3. R. Bellman, Dynamic Programming (Princeton Univ. Press, Princeton, NJ, 1957).
4. V. G. Boltyanskii, “An optimization problem with change of the phase space,” Diff. Uravn. 19 (3), 518–521 (1983).
5. V. Boltyanski, “The maximum principle for variable structure systems,” Int. J. Control 77 (17), 1445–1451 (2004).