Quasiparticle mixing in Ba-K-Bi-O grain boundary junctions Takami, T. ; Wada, Y. ; Kuroda, K. ; Ozeki, T. ; Hamanaka, K. Abstract Publication: IEEE Transactions on Applied Superconductivity Pub Date: June 1999 DOI: 10.1109/77.784010 Bibcode: 1999ITAS....9.4440T