INFLUENCE OF STOICHIOMETRY ON LOW-TEMPERATURE PROPERTIES OF UPt3 M. van Sprang, J. Q. A. Koster, A. A. Menovsky et J. J. M. Franse J. Phys. Colloques, 49 C8 (1988) C8-765-C8-766 DOI: 10.1051/jphyscol:19888345