LOW-TEMPERATURE HEAT CAPACITY STUDIES OF THE MAGNETICALLY ORDERED COMPOUNDS ErMn2Ge2 AND ErCo2Ge2 A. Szytua, M. Slaski, J. Kurzyk, B. Dunlap, Z. Sungaila and A. Umezawa J. Phys. Colloques, 49 C8 (1988) C8-437-C8-438 DOI: 10.1051/jphyscol:19888200