PT Journal AU Keller, P Schwarz, M Weiss, KP Heller, R Jung, C Aubele, A TI Electromechanical and thermal characterization of stacked Bi-2223 tapes at cryogenic temperature SO IEEE Transactions on Applied Superconductivity PY 2009 BP 2893 EP 96 VL 19 DI 10.1109/TASC.2009.2018503 LA english ER