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@article{DAN_1960_132_1_a0, author = {Yu. M. Berezanskii}, title = {Energy inequalities for some classes of equations of mixed type}, journal = {Doklady Akademii Nauk}, pages = {9--12}, publisher = {mathdoc}, volume = {132}, number = {1}, year = {1960}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1960_132_1_a0/} }
Yu. M. Berezanskii. Energy inequalities for some classes of equations of mixed type. Doklady Akademii Nauk, Tome 132 (1960) no. 1, pp. 9-12. http://geodesic.mathdoc.fr/item/DAN_1960_132_1_a0/