Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1979_15_4_a17, author = {N. D. Vasilevich and N. N. Ladis}, title = {Integrability of {Pfaff's} equations in $\mathbf{CP}^n$}, journal = {Differencialʹnye uravneni\^a}, pages = {732--733}, publisher = {mathdoc}, volume = {15}, number = {4}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1979_15_4_a17/} }
N. D. Vasilevich; N. N. Ladis. Integrability of Pfaff's equations in $\mathbf{CP}^n$. Differencialʹnye uravneniâ, Tome 15 (1979) no. 4, pp. 732-733. http://geodesic.mathdoc.fr/item/DE_1979_15_4_a17/