Schweitzer, L. Max Planck Society;
Scheffler, M. Theory, Fritz Haber Institute, Max Planck Society;
Schweitzer, L., & Scheffler, M. (n.d.). Electronic properties of strained bonds in amorphous silicon: The origin of the band-tail states. Proc. Optical Effects in Amorphous Semiconductors, 1984, 379-385.