Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1997_33_2_a2, author = {M. V. Dolov}, title = {An integrating factor in a neighborhood of a node}, journal = {Differencialʹnye uravneni\^a}, pages = {158--160}, publisher = {mathdoc}, volume = {33}, number = {2}, year = {1997}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1997_33_2_a2/} }
M. V. Dolov. An integrating factor in a neighborhood of a node. Differencialʹnye uravneniâ, Tome 33 (1997) no. 2, pp. 158-160. http://geodesic.mathdoc.fr/item/DE_1997_33_2_a2/