1. Bednorz JG, Müller KA (1986) Z Phys B 64: 189–193
2. Wu MK, Ashbum JR, Tong CJ, Hor PH, Meng RL, Gao L, Huang ZJ, Wang YQ, Chu CW, Phys Rev Lett (1987) 58: 908–910
3. See the following reviews: (1989–1996) Physical Properties of High Temperature Superconductors, vols. I-V, Ginsberg DM (ed.) World Scientific, Singapore; (1996) Proceedings of the 10th Anniversary HTS Workshops on Physics, Materials and Applications, Batlogg B, Chu CW, Chu WK, Gubser D, Müller KA (eds.) World Scientific, Singapore; Chu CW (1997), Superconductivity: High Temperature In: Encyclopedia of Applied Physics, vol. 20, Trigg GL (ed.) VCH Publishers, New York, pp. 213–247
4. Schilling A, Cantoni M, Guo JD, Ott HR (1993) Nature 363: 56–58
5. Chu CW, Gao L, Chen F, Huang ZJ, Meng RL, Xue YY (1993) Nature 365: 323–35;