@article{DE_1995_31_10_a20,
     author = {Yu. I. Sapronov},
     title = {Finite-dimensional reductions in the analysis of the branching of extremals},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1750--1758},
     publisher = {mathdoc},
     volume = {31},
     number = {10},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1995_31_10_a20/}
}