Abrahimpour Noorabadi, F., Ayeneband, A., Nourmohamadi, G., Mossavinia, H. and Mesgarbashi, M. 2003. Study of some wheat ecophysiologic indices as influenced by wild oat interaction. Pajouhesh & Sazandegi 73: 117-125.(In persian)
Aldrich, R. J. Predicting Crop yield reduction from weeds. Weed Technol. 1: 199-206.
Amini, R. 2008. Investigation of competitive ability of red bean (Phaseolus vulgaris L.) cultivars in different densities of redroot pigweed (Amaranthus retroflexus). PhD thesis (in Persian), University of Tehran, Iran. 205 p.(In persian)
Araia, V. 2001. Mixed cropping of barley (Hordeum vulgare L.) and Wheat (Triticum estivum L.). Landraces in the central highland of Eritrea. Ph.D. Thesis. Agricultural University of Vageningen, The Netherlands.
Caldwell, M. M. 1987. Plant architecture and resourse competition. Ecol. Stud. 61: 164-179.
Cousens, R. 1985. A simple model relating yield loss to weed density. Ann. Appl. Biol. 107: 239-252.
Graham, P. L., Steiner, J. L. and Wiese, A. F. 1989. Light absorption and competition in mixed sorghum-pigweed communities. Agron J. 80: 415-418.
Hassan-Zadeh Delouie, M., Nassiri-Mahallati, M., Nour-Mohamadi, G. and Rahimian-Mashhadi, H. 2003. Modelling light interception and distribution in mixed canopies of wild oat (Avena ludoviciana L.) and turnip weed (Rapistrum rugosum L.) in competition with wheat. Iranian Society of Agronomy. 2: 134-145.(In Persian)
James, R. K. 1994. Radiation-Use Efficiency and Grain Yield of Maize Competing with Johnsongrass. Agron. J. 86: 554-557.
Kropff, M.J. 1988. Modelling the effect of weeds on crop production.Weed Res. 28: 465-471.
Kropff, M. and Van laar, H. H. 1993. Modeling crop-weed interactions. CAB international. Walligford. UK.
Kropff, M.J., Van laar, H. H. and Berge (eds), H. F. M. 1993. ORYZAI: A basic model for irrigated lowland rice production. International Rice Research Insritute, Los Banos, Philippines. 89 p.
McLachlan, S. M., Tollenaar, M., Swanton, C. J. and Weise, S. F. 1993. Effect of induced shading on dry matter accumulation, distribution, and architecture of redroot pigweed (Amaranthus retroflexus). Weed Sci. 41: 568–573.
Monnteith, J.L. 1977. Climate and the efficiency of crop production in The Britain. Philos. Trans. R. Soc. London, Ser. B. 281: 227-294.
Munakamwe, Z. 2008. A physiological study of weed competition in peas (Pisum sativum L.). Ph.D. Thesis. Lincoln University Canterbury. New Zealand.
Nassiri, M., Elgersma, A. and Lantinga, E.A. 1996. Vertica distribution of leaf area, dry matter and radiation in grass- clover mixtures. In: Parente, G., Frame, J., Orsi, S. (Eds.), Grassland and land use systems, Proc. 16th meeting of the European Grassland Federation, vol. 1, pp. 269-274.
Nassiri Mahallati, M. 1998. Modeling Interaction in grass-clover mixture, Ph.D. Thesis. Wageningen Agriculture University. The Netherlands.
Nassiri Mahallati, M. and Elgersma, A. 1998. Competition in perennial ryegrass-white clover mixtures. II. Leaf characteristics, light interception and dry matter production during regrowth.Grass.Forage.Sci. 53: 367-379.
Norsworthy, J. K. and Oliver, L. R. 2002. Hemp sesbania interference in drill-seeded glyphosate resistant. Weed Sci. 50: 34-41.
0liver, L. R., Frans, R. E. and Talbert, R. E. 1976. Field competition between tall morningglory and soybean. I. Growth analysis. Weed Sci. 24: 482– 488.
Rao, V. S. 2000. Principles of weed science. Second edition. Science Publisher, Inc. NH, USA. 555 p.
Spitters, C. J. T. 1983. An alternative approach to the analysis of mixed cropping experiments. 1: Estimation of competition effects. Netherlands J. Agric Sci. 31: 1-11.
Spitters, C.J.T. and Aerts, R. 1983.Simulation of competition for light and water in crop-weed associations. Asp. App. Biol. 4: 467-484.
Stoller, E. W., and Woolley, J. T. 1985. Competition for light by broadleaf weeds in soybean (Glycin max L.). Weed Sci. 33: 199-202.
Stoller, E. W., Harrison, S. K., Wax, L. M., Regnier, E. E. and Nafziger, E. D. 1987. Weed interference with soybeans (Glycine max). Rev. Weed Sci. 3: 155-181.
Zimdahl, R. L. 1993. Fundamental of weed Science. Academic Press, Inc, USA. pp. 91-133.