@article{COCV_2020__26_1_A47_0,
     author = {Osmolovskii, N.P. and Veliov, V.M.},
     title = {Metric sub-regularity in optimal control of affine problems with free end state},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     publisher = {EDP-Sciences},
     volume = {26},
     year = {2020},
     doi = {10.1051/cocv/2019046},
     mrnumber = {4144113},
     zbl = {1448.49033},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/cocv/2019046/}
}