MODIFIED THEORY FOR MÖSSBAUER SPECTRA OF SUPERPARAMAGNETIC PARTICLES : APPLICATION TO Fe3O4 S. MØRUP, H. TOPSØE et J. LIPKAJ. Phys. Colloques, 37 C6 (1976) C6-287-C6-290DOI: https://doi.org/10.1051/jphyscol:1976658
