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@article{MASLO_1984__34_1_a4, author = {Maru\v{s}iak, Pavol}, title = {On the oscillation of nonlinear differential systems with retarded arguments}, journal = {Mathematica slovaca}, pages = {73--88}, publisher = {mathdoc}, volume = {34}, number = {1}, year = {1984}, mrnumber = {735938}, zbl = {0599.34092}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1984__34_1_a4/} }
Marušiak, Pavol. On the oscillation of nonlinear differential systems with retarded arguments. Mathematica slovaca, Tome 34 (1984) no. 1, pp. 73-88. http://geodesic.mathdoc.fr/item/MASLO_1984__34_1_a4/