(3GdcjejGA GddGYVhjI GdGSGSjI (B/ s - (3chJhf, a (B. (3C s; (3hjdcfShf, L s; (3GdRche, egOj fGLjs ((3GdHUQI (B[(3GdYQGb(B] : s (3OGQ GdMceI, s, 1988)
(3jJVef bGFeI HGdeUWdMGJ GdYdejI, GfcdjRj YQHj, UaMI(B899-903.s
(3jJVef bGFeI HGdKhGHJ GdcjejGFjI hGdajRjGFjI(B.s
(3jJVef bGFeI HeYGedGJ GdJMhjd(B.s
(3GdfU HGddZI GdYQHjI eJQLe ef GddZI GdGfcdjRjI(B.s
Keywords: (3GdcjejGA ZjQ GdYVhjIs