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@article{DAN_1978_242_1_a5, author = {V. A. Zaitsev}, title = {On {Huygens} principle for some equations with singularities}, journal = {Doklady Akademii Nauk}, pages = {28--31}, publisher = {mathdoc}, volume = {242}, number = {1}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1978_242_1_a5/} }
V. A. Zaitsev. On Huygens principle for some equations with singularities. Doklady Akademii Nauk, Tome 242 (1978) no. 1, pp. 28-31. http://geodesic.mathdoc.fr/item/DAN_1978_242_1_a5/