by Peng, Huo-Tian, Peng, Qiu-Yun, Lung, Xiang-Yun, Zhou, Si-Hai, Qi, Zhi-Wei, Wu, Yu-Sheng, Chen, Ji-Ping, Zhong, Yong, Cui, Bing-Sing, Fang, Jun-Ren, Cao, Guo-Hui
Published in Superconductor science & technology (01.11.1993)