@article{DE_1985_21_3_a22, author = {M. A. Ivanov}, title = {Disappearance of periodic solutions of two-dimensional quasihomogeneous systems}, journal = {Differencialʹnye uravneni\^a}, pages = {526--527}, publisher = {mathdoc}, volume = {21}, number = {3}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1985_21_3_a22/} }