1. Acıkgoz, E. (2001). Forage Crops. Uludag University Publication no: 182, Bursa, Turkey, pp. 584.
2. Akyıldız, R. (1984). Feed Information Laboratory Guide. Ankara University Faculty of Agriculture Publications, Publication No: 859, Ankara, pp:236.
3. Allen, R.G., Pereira, L.S., Raes, D., Smith, M. (1998). Crop evapotranspiration. Guidelines for computing crop water requirements, Irrigation and Drainage Paper 56, Food and Agriculture Organization of the United Nations, Rome, Italy, 300 pp.
4. Armstrong, D.L., 1998. Potassium in animal nutrition. Better Crops with Plant Food 82 (3): 32-33.
5. Badrzadeh, M., Zaragarzadeh, F., Esmaielpour, B. (2008). Chemical composition of some Vicia spp. in Iran. Journal of Food, Agriculture & Environment 6 (2): 178-180.