THE EFFECT OF Fe IMPURITIES ON SUPERCONDUCTING AND MAGNETIC PROPERTIES OF Nb-Ga ALLOYS WITH A 15 STRUCTURE J. Sosnowski, M. Drys, T. Mydlarz and M. Horobiowski J. Phys. Colloques, 39 C6 (1978) C6-393-C6-395 DOI: 10.1051/jphyscol:19786176