Generalization of Heisenberg Hamiltonians to non half-filled bands : a magneto-angular effective Hamiltonian for boron clusters A. Pellegatti, F. Marinelli, M. Roche, D. Maynau et J.P. MalrieuJ. Phys. France, 48 1 (1987) 29-43DOI: https://doi.org/10.1051/jphys:0198700480102900
