INDETERMINACY OF MULTIPLICITY (IM) AND PSEUDOMULTIPLICITY (IPM) OF CRYSTALS WITH MAGNETIC AND OTHER ORDER S. V. VONSOVSKY et M. S. SVIRSKYJ. Phys. Colloques, 32 C1 (1971) C1-83-C1-85DOI: https://doi.org/10.1051/jphyscol:1971124
