(3GdHNjd (B: s (3edgGI (B/ s - (3ehdjjQs ((3HjQhJ (B: s (3OGQ GdcJGH GddHfGfi , s, 1987)
Keywords: (3GdGOH GdaQfSis; (3GdeSQMjI GdaQfSjIs; (3GdGOH GdaQfSi GdeJQLes