(3GdOYGA h GdbVGA h GdbOQ ChGeQg h MceJg (B: s (3BjGJ GdOYGA aj GdbQBf GdcQje (B/ s - (3CMeO, eMeO eMehOs; (3GdNWjH, ehSis ((3GdbGgQI (B:s (3eQcR GdcJGH ddfTQ,s, 1997)
Keywords: (3GdPcQs; (3GdOYGAs