TY - RPRT TI - Excitonic Stark shift: A coupling to "semivirtual" biexcitons. AU - M Combescot AU - R Combescot PY - 1988 DO - 10.1103/physrevlett.61.117 UR - https://pubmed.ncbi.nlm.nih.gov/10038708/ ID - 10038708 ER -