(3abg GdYQHjI GdebGQf (B: s (3OQGSGJ aj CUhGJ GdYQHjI h UQagG h fMhgG Ydi VhA GddZGJ GdSGejI (B/ s - (3HYdHcj, efjQ QeRjs ((3HjQhJ (B:s (3OGQ GdYde ddedGjjf,s, 1999)
Keywords: (3GddZI GdYQHjI(B.s; (3GddSGfjGJ(B.s; (3GddZGJ(B.s; (3bhGYO GddZI(B.s; (3Yde GdUQa(B.s; (3GdCaYGd (B((3fMh(B).s