@article{TIMM_2022_28_3_a15,
     author = {M. I. Sumin},
     title = {Perturbation method, subdifferentials of nonsmooth analysis, and regularization of the {Lagrange} multiplier rule in nonlinear optimal control},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {202--221},
     publisher = {mathdoc},
     volume = {28},
     number = {3},
     year = {2022},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2022_28_3_a15/}
}