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@article{DAN_1966_170_5_a17, author = {V. F. Kozlov}, title = {On determining the depth of the zero surface}, journal = {Doklady Akademii Nauk}, pages = {1068--1069}, publisher = {mathdoc}, volume = {170}, number = {5}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1966_170_5_a17/} }
V. F. Kozlov. On determining the depth of the zero surface. Doklady Akademii Nauk, Tome 170 (1966) no. 5, pp. 1068-1069. http://geodesic.mathdoc.fr/item/DAN_1966_170_5_a17/