. (3fOhI HfGA GdSjGSGJ GdTHGHjI aj ehGLgI GdJMhdGJ GdGLJeGYjI aj dHfGf (B... [(3aj(B] 27 (3JTQjf GdKGfj (B1999 s - (3WYeg, LhQLs; (3GdGhfSchs ((3HjQhJs (3GdGhfSchs, 1999)
Keywords: (3GdTHGH aj dHfGfs; (3dHfGfs -- (3GdSjGSI GdGLJeGYjIs