(3OQGSGJ aj Yde GdGLJeGY (B/s - (3NaGLj, MSf Ydj ,s ((3LOI, GdSYhOjI (B:s (3MSf Ydj NaGLj,s, 1987)
(3HHdjhLQGajI (B: (3U(B. 215-220.s
Keywords: (3Yde GdGLJeGYs