RT - Journal Article T1 - JF - Yektaweb_Journals YR - 2007 JO - Yektaweb_Journals VO - 7 IS - 26 UR - http://refahj.uswr.ac.ir/article-1-12-fa.html SP - 223 EP - 246 AB - LA eng UL http://refahj.uswr.ac.ir/article-1-12-fa.html M3 ER -