(3QMdI GHf HWhWI (B: s (3JMaI GdfXGQ ai ZQGFH GdGeUGQ h YLGFH GdGSaGQ (B/ s - (3eMeO YHOGdefYe GdYQjGf (B((3eQGLY(B)s; (3GHf HWhWI (B: (3TQa GdOjf GHhYHOGddg eMeO Hf YHOGddgs ((3HjQhJ (B: s (3OGQ GMjGA GdYdhe , s, 1992)
Keywords: (3GdLZQGajGs; (3GdLZQGajG hGdQMdGJs; (3GdQMGdIs