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@article{DAN_1997_354_1_a3, author = {V. V. Kucherenko and V. P. Maslov}, title = {On the spectrum of normal forms of quadratic {Bose} operators}, journal = {Doklady Akademii Nauk}, pages = {18--20}, publisher = {mathdoc}, volume = {354}, number = {1}, year = {1997}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1997_354_1_a3/} }
V. V. Kucherenko; V. P. Maslov. On the spectrum of normal forms of quadratic Bose operators. Doklady Akademii Nauk, Tome 354 (1997) no. 1, pp. 18-20. http://geodesic.mathdoc.fr/item/DAN_1997_354_1_a3/