[1] Azizi. M. and Barimani, A., 2011. A review of the supply and demand a variety of paper and paperboard in the world and investigate the situation of Iran's foreign trade. First National Congress of the roadmap supply of raw materials and the development of wood and paper industry in the horizon in 1404, Gorgan , p112-118. (In Persian).
[2] Vesterlind, E.L. and Höglund, H., 2006. Chemitermomechanical pulp made from birch at high temperature. Nordic Pulp and Paper Research Journal, 21(2): 216-221.
[3] Garmaroody, E. R., Resalati, H. and Maddavi, S., 2007. CMP Pulping from Populus euramericana for Newsprint Production. Journal of the Iranian Natural Res, 60 (3):1013-1022. (In Persian).
[4] Heräjärvi, H,. 2005. Birch -properties and utilization. Finnish Forest Research Institute Joensuu Research Centre, COST E42, Thessaloniki, 22 p.
[5] Zeinaly, F Resalati, H. and Tasooji, M., 2011. Investigation Effect of Using Branch Woods of Hornbeam and Beech in compound of hardwoods Stems Wood Mixture on CMP Pulp Properties. J. of Wood & Forest Science and Technology, 18(1): 77-90 (.In Persian).
[6] Ververis, C., Georghiou, K., Christodoulakis, N., Santas, P. and Santas, R., 2004. Fiber dimensions, lignin and cellulose content of various plant materials and their suitability for paper production. Industrial Crops and Products, 19: 245–254.
[7] Nazeri, A, M., Talaeepoor, M. and Mirshokraie, S, A., 2008. The Study of Fiber Fines and Its Effects on Mechanical Strength of Newsprint Paper from CMP Pulp. Iranian Journal of Wood and Paper Science Research, 22 (2): 29-40.( In Persian).
[8] Luostarinen, K.. and Mottonen, V., 2010. Radial variation in the anatomy of Betula pendula wood from different growing sites. Baltic forestry, 16(2): 209-216.
[9] Safdari, V., 2010. Morphological characteristics and chemical components of Ulmus glabra, Ulmus compestris, Zelkova carpinifolia, Celtis australis woods. Iranian Journal of Wood and Paper Science Research, 25 (2):248-259 .(In Persian).
[10] Wu, M.R., Lanouette, R. and Valade, J.L., 2004. Understanding the fiber development during co-refining of white birch and black spruce mixtures, Part 1. Chemithermomechanical pulping, Pulp and Paper Canada, 105(12): 83-87.
[11] Kostiainen, K ., Jalkanen, H., Kaakinen, S., Saranpaa, P. and Vapaavuori, E., 2006. Wood properties of two silver birch clones exposed to elevated CO2 and O3. Global change Biol, 12:1230-1240.
[12] Goli, M., Zabihzadeh. S.M. and Asadpour, G., 2013. Effect of species mixing on chemimechanical pulp properties, M.Sc. thesis, Sari Agricultural Science and Natural Resources University, Faculty of Natural Resources 93 p.( In Persian).
)