(3OQGSGJ fbOjI (B: s (3aj VhA GdefgL GdhGbYj (B/ s - (3eQhI , MSjf s ((3HjQhJ (B: s (3ecJHI GdeYGQa , s, 1988)
Keywords: (3GdGOH GdYQHj s -- (3JGQjN hfbO s