Effect of annealing on superconductivity of Pb-doped Bi-Sr-Ca-Cu-O single-crystal superconductors - Gao, Y.; Li, Y.; Merkle, K. L.; Jiang, P. Z.; Chang, Y. C.; Shi, H.; Lam, D. J. (American Institute of Physics (AIP), 1990)
http://dx.doi.org/10.1063/1.104139
Keywords: U