(3GdGfYcGSGJ GdCefjI deMOOGJ GdJfejI aj OhdI GdEeGQGJ (B/s - (3HjGJ, eMeO QGTOs ((3GdTGQbI, GdEeGQGJ GdYQHjI GdeJMOI (B:s (3GdbjGOI GdYGeI dTQWI GdTGQbI, eQcR GdHMhK hGdOQGSGJ,s, 1999)
(3HHdjhLQGajI (B: (3U(B. 50-52.s
Keywords: (3GdCef GdOGNdjs -- (3GdEeGQGJ GdYQHjI GdeJMOIs; (3GdEeGQGJ GdYQHjI GdeJMOIs -- (3SjGSI GbJUGOjIs