@article{TM_2015_291_a15,
     author = {G. G. Magaril-Il'yaev},
     title = {The {Pontryagin} maximum principle. {Ab} ovo usque ad mala},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {215--230},
     year = {2015},
     volume = {291},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2015_291_a15/}
}