@article{TMF_1974_21_1_a10, author = {V. A. Kapustin}, title = {On~an~effective {Hamiltonian} that describes quasihomeopolar excitations in the framework of the {Hubbard} model}, journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika}, pages = {118--129}, publisher = {mathdoc}, volume = {21}, number = {1}, year = {1974}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TMF_1974_21_1_a10/} }