@article{DE_2000_36_1_a12,
     author = {V. G. Romanovsky and N. L. Shcheglova},
     title = {The integrability conditions for two cubic vector fields},
     journal = {Differencialʹnye uravneni\^a},
     pages = {94--97},
     publisher = {mathdoc},
     volume = {36},
     number = {1},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2000_36_1_a12/}
}