Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Okada Kozo and Seino Yasuhiro and Kotani Akio,Role of Cu 4s Band in Cu 2p-XPS of Nd2−xCexCuO4,Journal of the Physical Society of Japan,00319015,THE PHYSICAL SOCIETY OF JAPAN,1990,59,8,2639-2642,https://cir.nii.ac.jp/crid/1390282679155627776,https://doi.org/10.1143/jpsj.59.2639