@article{DE_2003_39_1_a3,
     author = {Yu. A. Klokov},
     title = {The {Neumann} {Problem} for a {Second-Order} {Singular} {System}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {30--34},
     publisher = {mathdoc},
     volume = {39},
     number = {1},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2003_39_1_a3/}
}