http://fa.wikipedia.org/wiki/%D8%A7%DB%8C%D9%86%D8%AA%D8%B1%D9%86%D8%AA_%D9%85%D8%A7%D9%87%D9%88%D8%A7%D8%B1%D9%87%E2%80%8C%D8%A7%DB%8C
http://www.hajarian.com/IT/tahghigh/hoseini2.pdf
