TI - PT - JOURNAL ARTICLE TA - jgs JN - jgs VO - 13 VI - 30 IP - 30 4099 - http://jgs.khu.ac.ir/article-1-1651-fa.html 4100 - http://jgs.khu.ac.ir/article-1-1651-fa.pdf SO - jgs 30 ABĀ  - CP - IRAN IN - LG - eng PB - jgs PG - 3 PT - YR - 2013