(3cjajI GdTgGOJjf (B: s (3CTgO Cf dG Edg EdG Gddg hCTgO Cf eMeO QShd Gddg (B/ s - (3YjSi, YHOg ZGdH CMeOs ((3HjQhJ (B: s (3OGQ GdLjd, s, 1987)
Keywords: (3GdESdGe(B. s; (3GdJhMjO(B. s; (3CUhd GdOjf GdESdGej(B. s