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@article{DAN_1979_248_1_a10, author = {M. M. Skriganov}, title = {Proof of the {Bethe--Sommerfeld} conjecture in dimension two}, journal = {Doklady Akademii Nauk}, pages = {39--42}, publisher = {mathdoc}, volume = {248}, number = {1}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1979_248_1_a10/} }
M. M. Skriganov. Proof of the Bethe--Sommerfeld conjecture in dimension two. Doklady Akademii Nauk, Tome 248 (1979) no. 1, pp. 39-42. http://geodesic.mathdoc.fr/item/DAN_1979_248_1_a10/