@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/}
}