(1)
A.I. D`yachenko, V.Yu. Tarenkov, R. Szymczak, H. Szymczak, A.V. Abal`oshev, S.J. Lewandowski, and L. Leonyuk,
ab-plane tunneling and Andreev spectroscopy of superconducting gap an pseudogap in 
,
Low Temp. Phys. 29, (2002) [
Fiz. Nizk. Temp. 29, 149-155, (2002)].