Conductivity and phase coherence length of single electrons in layered cuprates G. A. Levin, E. Cimpoiasu, H. Zheng, A. P. Paulikas, B. W. Veal, Shi Li, M. B. Maple and C. C. Almasan Europhys. Lett., 57 1 (2002) 86-92 Published online: 01 September 2002 DOI: 10.1209/epl/i2002-00545-8