@article{DE_1991_27_3_a21,
     author = {I. N. Klimashevskaya and S. G. Kondratenya},
     title = {Elementary classes of autonomous systems of two differential equations that do not have solutions with movable nonalgebraic singular points},
     journal = {Differencialʹnye uravneni\^a},
     pages = {535--537},
     publisher = {mathdoc},
     volume = {27},
     number = {3},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1991_27_3_a21/}
}