(3GdeTcdI GdGLJeGYjI ai acQ gfQi HQLShf (B: s (3OQGSI ai adSaI GdJZjQ (B/ s - (3eMehO GHh RjOs ((3GdbGgQI (B: s (3ecJHI ZQjH , s, 1989)
Keywords: (3GdadSaIs; (3GdadSaI GdMOjKIs; (3GdMQcGJ GdacQjIs