(3TNUjI GdeLQe hOhGaY GdLQjeI (B/ s - (3GdYjShj, YHO GdQMefs ((3GdQjGV (B: s (3GdeQcR GdYQHj ddOQGSGJ GdCefjI hGdJOQjH, s, 1990)
(3HHdjhLQGajI (B: (3U(B. 231-237. s
Keywords: (3Yde GdGLJeGY GdLfGFj s; (3GdLQjeI hGdeLQehf s; (3ecGaMI GdLQjeI s