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245 _aHubbard operators in the theory of strongly correlated electrons
100 _aOvchinnikov, S.G.
100 _aVal'kov, V. V.
260 _aLondon
260 _bImperial College Press
260 _c2004
300 _a241
020 _a1860944302
942 _cBK
_2BK21308
080 _a539.2 OVC
999 _c21308
_d21308