TY - RPRT TI - Alternating-field susceptometry and magnetic susceptibility of superconductors AU - Goldfard, R B AU - Lelental, M AU - Thompson, C A PY - 1991 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 3977 DO - 10.6028/NIST.IR.3977 ER -