A FREQUENCY DEPENDENT "LEVEL CROSSING" RESONANCE IN THULIUM NICOTINATE DIHYDRATE J. M. Baker, B. Bleaney, M. I. Cook, P. M. Martineau, M. R. Wells et C. A. HutchisonJ. Phys. Colloques, 49 C8 (1988) C8-1515-C8-1516DOI: https://doi.org/10.1051/jphyscol:19888698