(3cJGH GdCOZGd (B/ s - (3OjRfj, hGdJs ((3HjQhJ (B:s (3GcGOjeG,s, 1997)
Keywords: (3COH GdCWaGds; (3GdbUU GdYQHjIs; (3fGTFhf UZGQ (B(10-14) (3SfIs