(3GdehXa GdYGe aj bGfhf GdYbhHGJ (B:s (3Gdeaghe GdEOGQj hGdeaghe GdLfGFj ddehXa GdYGe(B-(3GdCTNGU GdPjf jNVYhf dUaI GdehXa aj eLGd LQGFe GdhXjaI GdYGeI(B-(3GdWhGFa GdJj JfWHb YdjgG GdMeGjI GdLfGFjI ddehXa GdYGe(B-(3HYV GdJWHjbGJ GdYedjI (B/s - (3Nda Gddg, CMeO Wgs ([(3O(B. (3e(B. :s (3O(B. (3f(B.](3,s, 1993)
(3HHdjhLQGajI (B: (3U(B. 440-459.s
Keywords: (3GdehXahfs -- (3hVY bGfhfj, bhGfjf, EdN(B.s -- (3eUQs; (3bGfhf GdYbhHGJs -- (3eUQs