TY - RPRT TI - Small calculated second-harmonic generation in Si1Ge1. AU - WG Aulbur AU - ZH Levine AU - JW Wilkins AU - DC Allan PY - 1995 DO - 10.1103/physrevb.51.10691 UR - https://pubmed.ncbi.nlm.nih.gov/9977764/ ID - 9977764 ER -