MAGNETIC RELAXATIONAL BEHAVIOUR IN Fe3+ DOPED POLYVINYLPYRIDINE V. K. IMSHENNIK, I. P. SUZDALEV, L. BOGNER, A. OGRODNIK et F. J. LITTERST J. Phys. Colloques, 37 C6 (1976) C6-751-C6-754 DOI: 10.1051/jphyscol:19766157