(3GdeQGab GdeTJQcI ai GdYbGQ(B: (3OQGSI JGUdjI defGRYGJ GdGScGf GdYedjI (B/ s - (3eMeO GdefLis ([S.N] : (3efTGI GdeYGQa GdGSdGejI , s, 1988)
Keywords: (3GdbGfhfs; (3bhGfjf hJTQjYGJs; (3GdbGfhf GdNGUs; (3GdGScGfs