1. Abich, H., 1878. Geologische Forschungen in den Kaukasischen Ländern. I. Theil. Eine Bergkalkfauna aus der Araxesenge bei Djoulfa in Armenien. VII + 126 pp. Wien (A. Hölder).
2. A reconsideration of the East Indian Letter Classification of the Tertiary;Adams;Bull. Britisch Museum (Natural History) Geol.,1970
3. Asmari biostratigraphy: Iranian Oil Operating Companies;Adams;Geol. Explorat. Divis. Rep.,1967
4. Dating the terminal Tethyan event. - Utrecht Micropaleontol;Adams;Bull. Georgian Acad. Sci.,1983
5. Biometric study of the late Oligocene benthic Foraminifera (Lepidocyclinidae and Nummulitida) from the Qom Formation, Central Iran (Tajar-Kuh section);Akbar-Baskalayeh;J. Paleont.,2020