@article{DE_2000_36_9_a14,
     author = {Yu. A. Klokov},
     title = {New solvability conditions for the {Neumann} problem for ordinary singular differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1280--1281},
     publisher = {mathdoc},
     volume = {36},
     number = {9},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2000_36_9_a14/}
}