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@article{AM2_1985__29_137089, author = {Bhagat Singh}, title = {On existence of nonoscillatory solutions in forced nonlinear differential equations.}, journal = {Aequationes mathematicae}, pages = {150--161}, publisher = {mathdoc}, volume = {29}, year = {1985}, zbl = {0587.34051}, url = {http://geodesic.mathdoc.fr/item/AM2_1985__29_137089/} }
Bhagat Singh. On existence of nonoscillatory solutions in forced nonlinear differential equations.. Aequationes mathematicae, Tome 29 (1985), pp. 150-161. http://geodesic.mathdoc.fr/item/AM2_1985__29_137089/