Arekhi, S., Heydari, M. and Pourbabaei, H. (2010) Vegetation-environmental relationships and ecological species groups of the Ilam oak forest landscape, Iran. Caspian Journal of Environmental Sciences, 8(2), 115-125.
Auchmoody, L.R., Smith, H.C. and Walters, R.S. (1993) Acorn production in northern red oak stands in northwestern Pennsylvania. USDA Forest Service Research Paper. NE-680, USA.
Cañellas, G., Roig, S., Poblaciones, M.J., Gea-Izquierdo, G. and Olea, L. (2007) An approach to acorn production in Iberian dehesas. Agroforestry Systems,70, 3-9.
Christisen, D.M. and Kearby, W.H. (1984) Mast measurement and production in Missouri (with special references to acorns). Terrestrial Series 13, Missouri Department of Conservation, Missouri. USA.
Christisen, D.M. and Korschgen, L.J. (1955) Acorn yields and wildlife usage in Missouri. Proceeding of the Twentieth North American Wildlife Conference. 20, 337-357. Dey, D.C. (1995) Acorn production in red oak. Ontario Forest Research Institute. No: 127, USA.
Elkinton, J.S., Healy, W.M., Buonaccorsi, J.P., Boettner, G.H., Hazzard, A.M., Smith, H.R. and Liebhold, A.M. (1996) Interactions among gypsy moths, white-footed mice, and acorns. Ecology, 77(8), 2332-2342.
Fattahi, M. (1992) Regeneration problems of Zagros forests. Proceeding of the Regeneration Problems in Northern Zagros Forests Conference. Iran.
Garrison, B.A., Wachs, R.L., Jones, J.S. and Triggs, M.L. (1998) Visual counts of acorns of California black oak (Quercus kelloggii) as an indicator of mast production. Western Journal of Applied Forestry. 13, 27-31.
Gea-Izquierdo, G., Cañellas, I. and Montero, G. (2006) Acorn production in Spanish holm oak woodlands. Investigación Agraria: Sistemas y Recursos Forestales. 15(3), 339-354.
Ghorbani, H. (2005) Acorn crops of Q. brantii in oak forests of Ilam. Technical Report, Publication of Research Institute of Forests and Rangelands, Iran.
Goodrum, P.D., Reid, V.H. and Boyd, C.E. (1971) Acorn yields, characteristics and management criteria of oaks for wildlife. Journal of Wildlife Management. 35(3), 520-532.
Graves, W.C. (1980) Annual oak mast yield from visual estimates. Proceeding of the Symposium on the Ecology, Management and Utilization of California Oaks. California, USA, pp. 270-274.
Greenberg, C.H. (2000) Individual variation in acorn production by five species of southern Appalachian oaks. Forest Ecology and Management. 132, 199-210.
Greenberg, C.H. and Parresol, B.R. (2002) Dynamics of acorn production by five species of southern Appalachian oaks. In: McShea M.J. and Healy W.M. (Eds.), Oak forest ecosystems: ecology and management for wildlife. The Johns Hopkins University Press, USA, pp. 140-172.
Greenberg, C.H. and Warburton, G.S. (2007) A rapid hard-mast index from acorn presence- absence tallies. Journal of Wildlife Management. 71(5), 1654-1661.
Gysel, L.W. (1956) Measurement of acorn crops. Forest Science. 2(1), 305-313. Gysel, L.W. (1957) Acorn production on good, medium, and poor oak sites in southern Michigan. Journal of Forestry. 55: 570-574.
Healy, W.M., Lewis, A.M. and Boose, E.F. (1999) Variation of red oak acorn production. Forest Ecology and Management. 116(1-3), 1-11.
Jazirehi, M.H. and Ebrahimi Rostaghi, M. (2003) Silviculture in Zagros. University of Tehran Press, Iran.
Johnson, P.S. (1994) How to manage oak forests for acorn production. USDA Forest Service, Technical Brief, NC-1, USA.
Johnson, P.S., Shifley, S.R. and Rogers, R. (2002) The ecology and silviculture of oaks. CABI Publishing.
Koenig, W.D., Knops, J.M.H., Carmen, W.J., Stanback, M.T. and Mumme, R.L. (1994a) Estimating acorn crops using visual surveys. Canadian Journal of Forest Research. 24, 2105-2112.
Koenig, W.D., Mumme, R.L., Carmen, W.J. and Stanback, M.T. (1994b) Acorn
Application of visual surveys to estimatePersian...94 production by oaks in central coastal California: variation within and among years. Ecology, 75, 99-109.
Koenig, W.D., Knops, J.M.H., Carmen, W.J., Stanback, M.T. and Mumme, R.L. (1996) Acorn production by oaks in central coastal California: influence of weather at three levels. Canadian Journal of Forest Research. 26, 1677-1683.
Koenig, W.D., Knops, J.M.H. and Carmen, W.J. (2002) Arboreal seed removal and insect damage in three California oaks. USDA Forest Service, General Technical Report PSW-GTR-184, pp. 193-204.
Mahdavi, A., Fallah Shamsi, S.R. and Nazari, R. (2012) Forests and rangelands? wildfire risk zoning using GIS and AHP techniques, Caspian Journal of Environmental Sciences, 10(1), 43-52.
McShea, W.J. and Healy, W.M. (2003) Oak forest ecosystems: Ecology and management for wildlife. The John Hopkins University Press, USA.
Mohammadi, J. (2006) Pedometery (Second volume: Geoestatistics). Pelk Publication, Iran.
Panahi, P., Jamzad, Z., Pourmajidian, M.R., Fallah, A. and Pourhashemi, M. (2011). A revision of Chestnut-leaved oak (Quercus castaneifolia C. A. Mey.; Fagaceae) in Hyrcanian Forests of Iran. Caspian Journal of Environmental Sciences. 9(2), 145-158.
Panahi, P., Jamzad, Z. and Pourhashemi, M. (2009) Acorn production of Zagros forests oaks and their qualitative characteristics in Zagros section of National Botanical Garden of Iran. Iranian Journal of Natural Resources.62, (1), 45-57.
Perry, R.W. and Thill, R.E. (1999) Estimating mast production: an evaluation of visual surveys and comparison with seed traps using white oaks. Southern Journal of Applied Forestry. 23, 164-169.
Pons, J. and Pausas, J.G. (2012) The coexistence of acorns with different maturation patterns explains acorn production variability in Cork oak. Oecologia, 169(3), 723-731.
Pourhashemi, M., Zande Basiri, M. and Panahi, P. (2011) Estimation of acorn production of gall oak (Quercus infectoria Olivier) in Baneh forests by Koenig visual method. Iran. Journal of Forest and Poplar Researches. 19(2), 205-220.
Rodríguez-Calcerrada, J., Pérez-Ramos, I.M., Ourcival, J.M., Limousin, J.M., Joffre, R. and Rambal, S. (2011) Is selective thinning an adequate practice for adapting Quercus ilexcoppices to climate change? Annals of Forest Science. 68, 575-585.
Sabeti, H. (1994) Forests, trees and shrubs of Iran, 2th edition, University of Yazd Publication, Iran.
Salehi, A., Karltun, L.Ch., Söderberg, U. and Eriksson, L.O. (2010). Livelihood dependency on woodland resources in southern Zagros, Iran. Caspian Journal of Environmental Sciences. 8(2), 181-194.
Sharp, W.M. and Sprague, V.G. (1967) Flowering and fruiting in the white oaks, postillate flowers acorn development, weather, and yields. Ecology, 48(2), 243-251.
Sork, V.L., Bramble, J. and Sexton, O. (1993) Ecology of mast-fruiting in three species of North American deciduous oaks. Ecology, 74(2), 528-541.
Steen, C., Jensen, R., Vangilder, L. and Sheriff. S. (2009) Hardmast production in the Missouri Ozarks: a preliminary report of acorn production on MOFEP. Missouri Department of Conservation, USA.
Whitehead, C.J. (1969) Oak mast yields on wildlife management areas in Tennessee. Tennessee Game and Fish Commission, USA.
Yazdanfar, H. (2006) The study of relationship between Q. libanidimensions and acorn crops in Chenareh forest, Marivan. M.Sc. Thesis, University of Tehran, Karaj, Iran.
Zar, J.H. (1999) Biostatistical analysis. Prentice-Hall, Inc., Englewood Cliffs, New Jersey, USA.