(3JbfjGJ GdHjY GdfGLM Ydi GdGfJQfJ (B/ s - (3gGQaj, cQjSJjf(B. s ((3HjQhJ (B:s (3GdOGQ GdYQHjI ddYdhe,s, 1997)
Keywords: (3EOGQI GdeHjYGJ(B. s; (3GdJShjb(B.s; (3JQhjL GdeHjYGJ(B.s