Assadi, M. 1989: Plan of the Flora of Iran. -Tehran.
Browicz, K., 1972: Betulaceae in K. H. Rechinger (ed.) Flora Iranica no. 96. -Graz.
Browicz, K., & Zielinski, J. 1982: Chorology of Trees and Shrubs in South-West Asia and Adjacent Regions, vol. 1. -Polish Scientific Publishers, Warsaw, Poznań.
Grossheim, A. A. 1949: Opredelitel’ rasteniy Kavkaza [Guide for plants of Caucasus]. -Nauka, Moskva.
Krüssmann, G. 1984: Manual of Cultivated Broad-Leaed Trees & Shrubs, Vol. I, A-D, p. 220-232. Translated by E. Epp, M., Timber Press. –London.
Sabeti, H. 1976: Forests, Trees and Shrubs of Iran. –Ministry of Agriculture and Natural Resources of Iran, Tehran.
Yaltrik, Y. 1982: Betulaceae in P. H. Davis (ed.) Flora of Turkey 7: 688-694. –Edinburgh.
Zare, H., 2002: Ecological study on Betula in Sangdeh and Lar valley, MSc Thesis. -Tarbiat Modares University, Tehran.
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