(3GbJUGOjGJ GdScGf ai Xd GdJVNe GdScGfi (B/ s - (3UdGM GdOjf fGjas ([S.N] : (3OGQ GdeYGQa , s, 1980)
Keywords: (3GdGbJUGOs; (3GdScGfs; (3GdGfaLGQ GdScGfis