(3dSGf GdYQH (B- (3GdeLdO GdKGdK YTQ (B( (3f (B- (3g` (B)s - (3GHf efXhQ(B. (3GHj GdaVd LeGd GdOjf eMeO Hf ecQes ((3OGQ UGOQs (3HjQhJs, 1992)
Keywords: (3GddZI GdYQHjI (B- (3eYGLe s; (3eYGLe dSGf GdYQHs