(3GdCOdI GdafjI ddHQGAg h GdCOdI aj GdehGO GdLfGFjI (B: s (3GdJSLjd GdUhJj (B- (3eQGbHI GdeMGOKGJ GdSdcjg h GddGSdcjg (B/ s - (3YGHOjf, eMeO CMeOs ((3GdEScfOQjg (B:s (3efTCI GdeYGQa,s, 1994)
Keywords: (3GdbGfhf GdLfGFjs; (3GdOdjds; (3GdeMGceGJs