1. History of oil exploration and brief description of the geology of the Sarakhs area and the anticline of Khangiran;Afshar-Harb;Bull. Iran Pet. Inst.,1969
2. Afshar-Harb , A. The stratigraphy, tectonics and petroleum geology of Kopeh Dagh region, northern Iran London 1979
3. Aghanabati , A. Geologic map of the Mashhad quadrangle Geol. Surv. Iran. Tehran 1985
4. The Virani ophiolite complex and surrounding rocks;Alavi;Geol. Rundsch.,1979
5. Sedimentary and structural characteristics of the Paleo-Tethys remnants in northeastern Iran;Alavi;Geol. Soc. Am. Bull.,1991