FURTHER-STUDIES OF THE ENHANCED NUCLEAR MAGNET HOVO4 .1. THE CRYSTAL-FIELD AND THE ZEEMAN SPECTRUM - Bleaney, B; Gregg, J; Hansen, P; Huan, C; Lazzouni, M; Leask, M; Morris, I; Wells, M (PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1988)