Media type: E-Article Title: Effective Spin Hamiltonian for Nonorthogonal Orbitals. I : Linked-Cluster Expansion : Linked-Cluster Expansion Contributor: Yonezawa, Fumiko imprint: Oxford University Press (OUP), 1965 Published in: Progress of Theoretical Physics Language: English DOI: 10.1143/ptp.34.210 ISSN: 0033-068X Keywords: Physics and Astronomy (miscellaneous) Origination: Footnote: Access State: Open Access