- Anonymous (2010). National Statistical Newsletter. Ministry of Jihad-e-Agriculture, Iran
- Alizadeh K. and Shiv Kumar A. (2013). Development of vetches and grass pea as suitable crops for highlands of Iran. 11th International Conference on Dryland Development. 18-23 March 2013, Beijing, China.
- Delgado C.L. (2003). Rising consumption of meat and milk in developing countries has created a new food revolution. J. Nutr.vol. 13: 3907-3910
- Ghosh P. K. (2004). Growth yield competition and economics of groundnut/cereal odder intercropping systems in the semi-arid tropics of India. Field Crops Res., 88:227-237
- Lamei J., Alizadeh K., Teixeira da Silva J.A. & Taghaddosi M.J. (2011). Vicia panonica: A suitable cover crop for winter fallow in cold regions of Iran. Plant Stress 6(1): 73-76
- Modarres R., and Da Silva R.V. (2007). Rainfall trends in arid and semi-arid regions of Iran. Journal of Arid Environments, 70:344–355
- Mpairwe D.R., Sabiti E.N., Umuna N.N., Tegegne A. and Osuji P. (2003). Integration of forage legumes with cereal crops: 1: effects of supplement with graded levels of lablab hay on voluntary food intake, digestibility, milk yield and milk composition of crossbred cows fed maize-lablab Stover or oats-vetch hay. Livestock Production Science 79: 193–212.
- SPSS. (1998). SPSS Base 8.0 User’s Guide and SPSS Applications Guide, SPSS, Chicago, p. 256.