(3Yde GdfaS GdaSjhdhLi (B: (3OQGSI ai JaSjQ GdSdhc GdGfSGfi (B/ s - (3YHOGdQMef eMeO YjShis ((3GdbGgQI (B: s (3OGQ GdfgVI GdYQHjI ddWHGYI hGdfTQ , s, 1991)
Keywords: (3Yde GdfaSs; (3GdJMdjd GdfaSis; (3Yde GdfaS GdaSjhdhLis; (3GdPGcQIs; (3GdJacjQs; (3GdLhGfH GdfaSjIs