@article{DE_1978_14_11_a19, author = {V. I. Matatov}, title = {Movable singularities of a second-order system}, journal = {Differencialʹnye uravneni\^a}, pages = {2076--2078}, publisher = {mathdoc}, volume = {14}, number = {11}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1978_14_11_a19/} }