ON THE FIELD COOLED SUSCEPTIBILITY OF SUPERCONDUCTING YBaCuO SAMPLES F. Celani, R. Messi, N. Sparvieri, S. Pace, A. Saggese, C. Giovannella, L. Fruchter and C. Chappert J. Phys. Colloques, 49 C8 (1988) C8-2107-C8-2108 DOI: 10.1051/jphyscol:19888947