(3WQjb GdGjeGf (B: s (3Gh GdGjeGf HGddg Yf WQjb GdacQ GdSJfjQs ((3HjQhJ (B: s (3OGQ GdcJGH GddHfGfi , s, 1983)
Keywords: (3GdGSdGes; (3GdYdes; (3Gddgs; (3GddGghJs; (3GdGdhgjIs