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@article{DAN_1980_250_4_a9, author = {N. A. Lar'kin}, title = {On global solutions of nonlinear hyperbolic inequalities}, journal = {Doklady Akademii Nauk}, pages = {806--809}, publisher = {mathdoc}, volume = {250}, number = {4}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1980_250_4_a9/} }
N. A. Lar'kin. On global solutions of nonlinear hyperbolic inequalities. Doklady Akademii Nauk, Tome 250 (1980) no. 4, pp. 806-809. http://geodesic.mathdoc.fr/item/DAN_1980_250_4_a9/