Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1998_34_3_a19, author = {A. M. Popov}, title = {Potentiality conditions for differential-difference equations}, journal = {Differencialʹnye uravneni\^a}, pages = {422--424}, publisher = {mathdoc}, volume = {34}, number = {3}, year = {1998}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1998_34_3_a19/} }
A. M. Popov. Potentiality conditions for differential-difference equations. Differencialʹnye uravneniâ, Tome 34 (1998) no. 3, pp. 422-424. http://geodesic.mathdoc.fr/item/DE_1998_34_3_a19/