Anomalous millimeter-wave absorption in the superconducting phase of La2−x SrxCuO4 - Pronin, A. V.; Gorshunov, B. P.; Volkov, A. A.; Somal, H. S.; Marel, D.; Feenstra, B. J.; Jaccard, Y.; Locquet, J. -P. (Springer, 1998)
http://dx.doi.org/10.1134/1.567885
Keywords: U