@article{DE_2001_37_3_a7,
     author = {V. V. Filippov},
     title = {Linkage of {Cycles} and {Boundary} {Value} {Problems} for {Ordinary} {Differential} {Equations}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {375--383},
     publisher = {mathdoc},
     volume = {37},
     number = {3},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2001_37_3_a7/}
}