Lee, B.; Alsenz, R.; Ignatiev, A.; Van Hove, M. (1978). "Surface structures of the two allotropic phases of cobalt". Physical Review B17 (4): 1510. doi:10.1103/PhysRevB.17.1510. Bibcode: 1978PhRvB..17.1510L.
Lee, B.; Alsenz, R.; Ignatiev, A.; Van Hove, M. (1978). "Surface structures of the two allotropic phases of cobalt". Physical Review B17 (4): 1510. doi:10.1103/PhysRevB.17.1510. Bibcode: 1978PhRvB..17.1510L.