@article{VMUMM_2008_6_a8,
     author = {Yu. F. Golubev},
     title = {The {Okhotsimskii--Pontryagin} method in control theory and analytical mechanics. {Part~I}},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {49--55},
     publisher = {mathdoc},
     number = {6},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2008_6_a8/}
}