The sites they investigated—in the Wadi Buqe’ah—were Khirbet Abu-Tabaq, Khirbet es-Samrah and Khirbet el-Maqari. Frank M. Cross and J. F. Milik, “Explorations in the Judean Buqe’ah,” Bulletin of the American School of Oriental Research 142 (1956), pp. 5–17.