(3OhQ GdEMUGA GdLfGFj aj JQTjO GdJOQjH GdCefj (B/ s - (3QGTO, MGeOs ([(3ecGf GdfTQ ZjQ eMOO(B] :s [(3GdfGTQ ZjQ eMOO(B](3,s, 1996)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B. s
Keywords: (3ecGaMI GdLQjeIs -- (3HMhK s; (3GdEMUGA GdLfGFjs -- (3HMhK s; (3GdLQjeI hGdeLQehf s -- (3HMhK s