@article{DE_1979_15_10_a17,
     author = {N. P. Erugin},
     title = {Revisions in {Section~5,} {Chapter~XIII} of {A~reader} for a general course in differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1894--1897},
     publisher = {mathdoc},
     volume = {15},
     number = {10},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1979_15_10_a17/}
}