Ahmadzadeh- Heravi, M., 1975 - Stratigraphie und fauna im Devon des Ostlichen Elburz (Iran), Clausthaler geol. Abh. 23, P. 114.
Bozorgnia, F., 1973- Paleozoic foraminiferal biostratigraphy of Central and east Alborz mountains, Iran. N. I. O. C., geol. Labor., No. 4, P. 158.
Dineley, D. L., 1984- Aspects of a stratigraphic system: The Devonian, Biostratigraphy, P. 63-87.
Gaetani, M., 1965- The geology of the upper Djadjerud and lar valleys (north Iran), II. Palaeontology, Riv. Ital Paleont., V. 71, n. 3, P. 679- 770.
House, M. R., 1973- Devonian Goniatites. In: Atlas of Palaeobiogeography, by: Hallam, A.,P. 67-79.
Moore, C. R., 1957- Treatise on invertebrate paleontology, part L., Mollusca 4, Cephalopoda, Amonoidea, P. 11-80.
Oliver, W. A. 8 Chlupac,l. 1991- Defining the Devonian system: 1979-89, Lethaia, Vol. 24, No. 1, P. 119-121.
Stampfly, M., 1978- Geologie de L'Elbourz Oriental au sud de Gonbad-e- Quabus. These no 1868, Geneve, P. 322, fig. 110, PL. 7.
Walliser, O. H., 1966- Preliminary notes on devonian, lower and upper carboniferous goniatites in Iran. Geological Survey of Iran., No. 6, P. 7- 24.