Wagner, M. Unitary transformations in solid state physics / Max Wagner. - Amsterdam ; North-Holland ; 1986. - xvi, 357 p. ; 25 cm. - Modern problems in condensed matter sciences; v 15. . ISBN: 0444869751 Subjects--Index Terms: Solid state physics--Mathematics Unitary transformations Dewey Class. No.: 530.4/1/0151 / WAG