VI Nefedov, AN Sokolov, MA Tyzykhov… - Journal of electron …, 1989 - Elsevier
Detailed quantitative XPS studies of the YBa 2 Cu 3 O x, and Bi 2 Sr 2 CaCu 2 O x, high-T c
superconductor (HTSC) surface layer, approximately 200 nm thick, have been carried out …