@article{DE_2001_37_3_a3,
     author = {G. A. Kolokol'nikova},
     title = {Using {Transformation} {Methods} to {Describe} {Discontinuous} {Trajectories} in {Problems} with {Phase} {Constraints}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {323--327},
     publisher = {mathdoc},
     volume = {37},
     number = {3},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2001_37_3_a3/}
}