AbdaliMashhadi, A. (1999).Intercropping effects of sustainable agriculture. Scientific Monthly, specialtyolivefarming.No.138.PP :4-10.
Anil, L. Park, J. Phipps, R.H. and Miller. F.A. (1998). Temperate intercropping of cereals for forage: A review of the potential for growth and utilization with particular reference to the UK. Grass Forage Sci. 53:301–317.
Campling, R.C. 1991. Processing cereal grain for cattle- a review Livestock Prod. Sci. 28:223-234.
Carr, P. M., Martin, G. B., Caton, J. S. & Poland, W. W. (1998). Forage and nitrogen yield of barley-pea and oat-pea intercrops. Agronomy Journal, 90, 79-84.
Chalk, P. M. (1996). Nitrogen Transfer From Legumes To Cereal in intercropping، In Roots and Nitrogen in Cropping Systems of the Semi-arid Tropics. 351-374.
Chatterjee, B.N., and Mandel, k. (1992). Present trends in research on intercropping .
Indian J. Chen, C., Westcot, M., Neill, K., Wichaman, D., and Konx, M., 2004. Row configuration and nitrogen application for barley-pea intercropping in Montana. Agron. J. 96 : 1730-1738.
Chen, C. Westcot, M. Neill, K. Wichaman, D. and Konx, M. (2004). Row configuration and nitrogen application for barley-pea intercropping in Montana. Agron. J. 96 : 1730-1738.
Clark, k.M. and Myers, R.L. (1994). Intercrop performance of pear millet, amaranthus, cowpea, soybean and guar in response to pattern and nitrogen fertilization. Agron. J. 86 : 1067-1102.
Daryai, M. H. And Qalykhany, M. (2010). Assess the quality and quantity of forage yield in intercropping barley and black peas. Iranian Journal of Crop Sciences. 40: 11-19.
Giller, K.E. and Wilson, K.J. (1991). Nitrogen fixation and tropical cropping systems. CAB International, Wallingford, pp.10-120.
Hanbury, C.D., Hughes, B. (2003). New Grain Legume For Layers, Evaluation of Lathyrus Cicera as a Feed Ingredient For layers. A report for the australian egg corporation limited. AECL publication NO 03/013.
Jana, P.K., B.K. Mandal., O. Prakash.and D. Chakraborty,. 1995; Growth, water-use and yield of Indian mustard (Brassica-juncea), gram(Cicer-arietium) and lenti (Lens-culinaris) grown as sole crops and intercrops with 3 moisture regimes.Indian Journa of Agricultural Science. 65: 387-397.
Jensen, E.S. Ambus, N. Bellostas, N. Boisen, S. Brisson, N. Corre- Hellou, G. Crozat, Y. (2006): Intercropping of cereals and grain legumes for increased production, weed control, improve product quality and prevention of N-losses in European organic farming systems. Proceedings of the European Joint Organic Congress, Denmark, 180-18
Jeyabal, A. and Kuppuswamy, G. (2001). Recycling of organic wastes for the production of vermi compost and its response in rice-legume cropping system and soil fertility. Euro J Agron, 15, 153-170.
Juskiw, P.E. Helm, J.H. and Salmon, D.F. (2000). Forage yield and quality for monocrops and mixtures of small grain cereals. Crop Sci. 40:138–147.
Khalatbari, A. Hosseini, M.b. Majnoon Hosseini, N. Mazaheri, d. (2010). Effect of intercropping on yield of forage sorghum and forage pearl millet. Iranian Journal of Crop Sciences. 41: 205-214.
Khazaei, H. R. (1993). Effect of different seed rates on yield and quality of forage yield in intercropping oat and vetch forage species. The Master of Agriculture degree. Ferdowsi University of Mashhad.
King, J. (2005). The productivity of oats and berseem clover intercrops. Promary growth characteristics and forage quality at densities of oats. Grass and Forage Sci. 60:74-86.
Lauriault, L.M. and Kirksey, R.E. (2004). Yield and nutritive value of irrigated winter cereal forage grass– legume Intercrops in the southern high plains, USA. Agronomy Journal, 96: 352-358.
Lewis, D.C. and J.D. Farlane, M. (1986). Effect of foliar applied manganese on the growth of safflower and the diagnosis of manganese deficiency by plant issue and seed analysis. Australian Journal Agriculture Research. 72 (1): 57-59.
Mazaheri, D.(1999). Mixed farming. Tehran University Press, page 262
Mohsen Abadi, A. Jahansoz, M. Rahmatyan Mashhadi, B. Merit, AS. Tvaqby Firouzabadi, Gh. (2008). Evaluation of barley intercropping - vetch at different levels of nitrogen. International Journal of Agriculture Science and Technology, No. 10, pp. 23-310.
Nielsen, H.H. Ambus, P. and Jensen, E.S. (2001). Interspecific competition N use and interference with weed in pea-barley Intercropping. Field crop Res. 70(2) :101-109.
Rahmani, A. (2004). Evaluation of sorghum – berseem clover intercropping effect on yield, forage quality and weed population dynamics. M. Sc. thesis in Agronomy, University of Tehran.
Sistach, M. (1990). Intercropping of forage sorghum, maize and soybean during ten establishments of different grasses in a vertisol soil. Cuban Journal of Agricultural Science. 24:123-129
Shabani, GH. Azizi, KH. Chaichi,m. Torknezad,A. Ghalavand, A., and Dvraghy, d. (2005), Effect of mono cropping and inter cropping on medicago sativa and barley forage yield, seed saving, seed and soil deferred. Journal of Research andDevelopment66:67-73.
sharifi AshourAadi, A. Lebaschy, M. H. Matin, A. b. Abaszade, B. Alizadeh And Anaraki, k. (2007). Effect of nitrogen fertilizer methods and intercropping of medicinal species on energy efficiency. Abstracts of Crop Science Congress. Aboureyhan Campus - Tehran University. Ps. 509 to 510.