EXPERIMENTAL INVESTIGATION OF THE INFLUENCE OF IMPURITIES ON THE CURIE TEMPERATURE OF IRON STOELINGA S. J. M., GRIMBERG A. J. T., GERSDORF R. and DE VRIES G. J. Phys. Colloques, 32 C1 (1971) C1-330-C1-331 DOI: 10.1051/jphyscol:19711110