Khazaei, Fardin, et al. “EVALUATION OF WHEAT (TRITICUM AESTIVUM, L.) SEED QUALITY OF CERTIFIED SEED AND FARM- SAVED SEED IN THREE PROVINCES OF IRAN ”. Plant Breeding and Seed Science, vol. 73, June 2016, pp. 99-115, http://ojs.ihar.edu.pl/index.php/pbss/article/view/236.