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@article{DAN_1961_138_1_a7, author = {V. I. Lebedev}, title = {Dirichlet and {Neumann} problems on triangular and hexagonal grids}, journal = {Doklady Akademii Nauk}, pages = {33--36}, publisher = {mathdoc}, volume = {138}, number = {1}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_1_a7/} }
V. I. Lebedev. Dirichlet and Neumann problems on triangular and hexagonal grids. Doklady Akademii Nauk, Tome 138 (1961) no. 1, pp. 33-36. http://geodesic.mathdoc.fr/item/DAN_1961_138_1_a7/