APA
(1991). Generalized hubbard hamiltonian: Renormalization group approach. [s.l.]: [s.n.].
Chicago
1991. Generalized hubbard hamiltonian: Renormalization group approach. [s.l.]: [s.n.].
Harvard
(1991). Generalized hubbard hamiltonian: Renormalization group approach. [s.l.]: [s.n.].
MLA
Generalized hubbard hamiltonian: Renormalization group approach. [s.l.]: [s.n.]. 1991.