@article{DE_1990_26_2_a21,
     author = {V. N. Gorbuzov and S. N. Udot},
     title = {Second order systems with quadratic nonlinearity of {Painlev\'e} type},
     journal = {Differencialʹnye uravneni\^a},
     pages = {345--348},
     publisher = {mathdoc},
     volume = {26},
     number = {2},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_2_a21/}
}