@article{DE_2001_37_1_a21,
     author = {A. P. Markeev},
     title = {The {Third} {Volume} of the {Encyclopaedia} {Sovremennoe} {Estestvoznanie} {(Modern} {Natural} {Science)}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {139},
     publisher = {mathdoc},
     volume = {37},
     number = {1},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2001_37_1_a21/}
}