RT - Journal Article T1 - form2 JF - jsci YR - 2013 JO - jsci VO - 13 IS - 3 UR - http://jsci.khu.ac.ir/article-1-1730-fa.html SP - 1 EP - 4 AB - 2 LA eng UL http://jsci.khu.ac.ir/article-1-1730-fa.html M3 ER -