(3ecJHI GdOGQ GdYQHjI ddcJGH (B: (3GdZQGH hGdLfOH(B-(3GdfMdI hGdfedI hGdVaOYI hGdLfOH(B-(3GdWjQGf GdGhd(B-(3Gdjhe GdGhd(B-(3GdfMdI hGdOH (B/ s - (3Mdei GdJhfis; (3MSf YHOGddgs ((3GdbGgQI (B: s (3ecJHI GdOGQ GdYQHjI ddcJGH , s, 1992)
Keywords: (3GdGWaGds; (3GdbUUs; (3bUU GdGWaGds