TY - JOUR T1 - 1 TT - 1 JF - jsci JO - jsci VL - 1373 IS - 7 UR - http://jsci.khu.ac.ir/article-1-1288-fa.html Y1 - 1994 SP - 0 EP - 0 KW - 1 N2 - 1 M3 ER -