(3eSGgeI aj OQGSI XQha GdYed (B/s - (3CMeO , OeQj s ((3GdLRGFQ (B:s (3OjhGf GdeWHhYGJ GdLGeYjI ,s, 1990)
Keywords: (3OQGSI s; (3GdYed s; (3XQha s; (3eSGgeI s