TY - RPRT TI - Standard Reference Materials Critical current measurements on an NbTi superconducting wire standard reference material AU - Clark, A F AU - Ekin, J W AU - Vecchia, D F AU - Goodrich, L F PY - 1984 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NBS SP 260-91 DO - 10.6028/NBS.SP.260-91 ER -