Andrei Agrachev, Luca Rizzi, Pavel Silveira, “On Conjugate Times of LQ Optimal Control Problems”, J Dyn Control Syst, 21, № 4, 2015, 625
Andrei Agrachev, Ivan Beschastnyi, “Jacobi Fields in Optimal Control: One-dimensional Variations”, J Dyn Control Syst, 26, № 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, № 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, № 4, 2010, 1018
F. C. Chittaro, “An Estimate for the Entropy of Hamiltonian Flows”, J Dyn Control Syst, 13, № 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, № 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, № 1, 2023, 236
Andrei A. Agrachev, Francesca C. Chittaro, “Smooth optimal synthesis for infinite horizon variational problems”, ESAIM: COCV, 15, № 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, № 3, 2018, 391