Electronic structure of Nd2-xCexCuO4- δ studied by photoelectron spectroscopy Grassmann, A. ; Ströbel, J. ; Klauda, M. ; Schlötterer, J. ; Saemann-Ischenko, G. Abstract Publication: EPL (Europhysics Letters) Pub Date: August 1989 DOI: 10.1209/0295-5075/9/8/015 Bibcode: 1989EL......9..827G