1. Abich, H.W., Vergleichende Grundzuge der Geologie des Kaukasus wie der Armenischen und Nordpersischen Gebirge, Bull. Acad. Imp. St. Petersb., 1858, vol. 3, pp. 1–180.
2. Abich, H.W., Geologische Forschungen in den Kaukasischen Lander: Th. I. Eine Bergkalkfauna aus der Araxes Eage boi Djoulfa in Armenien Sien, 1878.
3. Abramian, M.S., New brachiopod species from the Famennian of Armenia, Izv. Akad. Nauk Armyan. SSR Ser. Fiz.-Mat., Estest Tekhn. Nauk, 1954, vol. 7, no. 2, pp. 65–71.
4. Abramian, M.S., Brakhiopody verkhnefamenskikh i etrenskikh otlozhenii yugo-zapadnoi Armenii (Brachiopods from the Upper Famennian and Etroeungt Deposits of Southwestern Armenia), Erevan: Inst. Geol. Nauk Akad. Nauk Armyan. SSR, 1957.
5. Abramian, M.S., New brachiopod species from the Upper Famennian of Armenia, Izv. Akad. Nauk Armyan. SSR Ser. Fiz.-Mat., Estest Tekhn. Nauk, 1959, vol. 12, no. 6, pp. 4–10.