(3GdehShYI aj Ydhe GdWHjYjI (B/s - (3ZGdH,COhGQ s ((3GdLRGFQ (B:s (3OjhGf GdeWHhYGJ GdLGeYjI ,s, 1990)
Keywords: (3Ydhe GdWHjYjIs; (3GdehShYI s