TY - RPRT TI - Beuhler, Friedman, and Friedlander reply. AU - RJ Beuhler AU - L Friedman AU - G Friedlander PY - 1990 DO - 10.1103/physrevlett.64.2211 UR - https://pubmed.ncbi.nlm.nih.gov/10041613/ ID - 10041613 ER -