Andreev bound states in high temperature superconductors L. Alff, S. Kleefisch, U. Schoop, M. Zittartz, T. Kemen, T. Bauch, A. Marx and R. Gross Eur. Phys. J. B, 5 3 (1998) 423-438 Published online: 15 October 1998 DOI: 10.1007/s100510050463