Andrei Agrachev, Luca Rizzi, Pavel Silveira, “On Conjugate Times of LQ Optimal Control Problems”, J Dyn Control Syst, 21, no. 4, 2015, 625
Andrei Agrachev, Ivan Beschastnyi, “Jacobi Fields in Optimal Control: One-dimensional Variations”, J Dyn Control Syst, 26, no. 4, 2020, 685
Andrei Agrachev, Hamiltonian Dynamical Systems and Applications, 2008, 143
Elimhan Mahmudov, “Approximation and optimization of higher order discrete and differential inclusions”, Nonlinear Differ. Equ. Appl., 21, no. 1, 2014, 1
Yuri L. Sachkov, “Conjugate and cut time in the sub-Riemannian problem on the group of motions of a plane”, ESAIM: COCV, 16, no. 4, 2010, 1018
F. C. Chittaro, “An Estimate for the Entropy of Hamiltonian Flows”, J Dyn Control Syst, 13, no. 1, 2007, 55
Yasir Awais Butt, Yuri L. Sachkov, Aamer Iqbal Bhatti, “Maxwell Strata and Conjugate Points in the Sub-Riemannian Problem on the Lie Group SH(2)”, J Dyn Control Syst, 22, no. 4, 2016, 747
Yu. L. Sachkov, E. F. Sachkova, “Abnormal Trajectories in the Sub-Riemannian $(2,3,5,8)$ Problem”, Proc. Steklov Inst. Math., 321, no. 1, 2023, 236
Andrei A. Agrachev, Francesca C. Chittaro, “Smooth optimal synthesis for infinite horizon variational problems”, ESAIM: COCV, 15, no. 1, 2009, 173
A. V. Podobryaev, Yu. L. Sachkov, “Symmetric Riemannian Problem on the Group of Proper Isometries of Hyperbolic Plane”, J Dyn Control Syst, 24, no. 3, 2018, 391