Zarghani, Hadi, Sajad Mijani, Samieh Eskandari Nasrabadi, Mohhamad Ghias-Abadi, Surur Khorramdel, and Reyhaneh Azimi. 2014. “Temperature Effects on the Seed Germination of Some Perennial and Annual Species of Asteraceae Family”. Plant Breeding and Seed Science 69 (June):3-14. http://ojs.ihar.edu.pl/index.php/pbss/article/view/279.