(3EJLGgGJ MOjKI aj Yde GdSjGSI(B/s - (3Ydj YHO GdbGOQs; (3eQcR GdHMhK h GdOQGSGJ GdSjGSjI s ((3GdbGgQI (B:s (3ecJHI GdfgVI GdeUQjI (B,s, 1987)
. 359-349(3HHdjhLQGajG(B: (3UaMGJ(B.s
Keywords: (3GdbGfhf GdOSJhQjs