Voir la notice de l'article provenant de la source Math-Net.Ru
@article{KUKZ_1970_7_7_a16, author = {V. I. Zhegalov}, title = {On a class of higher order differential equations}, journal = {Trudy seminara po kraevym zada\v{c}am}, pages = {129--134}, publisher = {mathdoc}, volume = {7}, number = {7}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KUKZ_1970_7_7_a16/} }
V. I. Zhegalov. On a class of higher order differential equations. Trudy seminara po kraevym zadačam, Trudy Seminara po Kraevym Zadacham, Tome 7 (1970) no. 7, pp. 129-134. http://geodesic.mathdoc.fr/item/KUKZ_1970_7_7_a16/