(3GdhSjW aj CYeGd TQWI GdYQGb (B:s (3OQGSI JMdjdjI aj GdELQGAGJ GdbGfhfjI hGdEOGQjI (B/s - (3GdHjGJj, TgGH QTjO Ndjds; (3GdMHhT, WGgQ Ldjds ((3HZOGO (B:s (3hRGQI GdOGNdjI, eOjQjI GdTQWI GdYGeI,s, 1997)
(3HHdjhLQGajI (B: (3U(B. 727-744.s
Keywords: (3GdTQWI GdEOGQjIs -- (3GdYQGbs; (3GdTQWIs -- (3bhGfjf hJTQjYGJs -- (3GdYQGbs