TIME-DEPENDENT LINEWIDTH AND RECOILLESS FRACTION OF THE MÖSSBAUER SPECTRUM WITH 57Co2+[Fe III(CN)6]3- T. Kobayashi, T. Kitahara et S. Shimizu J. Phys. Colloques, 40 C2 (1979) C2-411-C2-412 DOI: 10.1051/jphyscol:19792143