(3GddZI GdYQHjI ai GWGQgG GdGLJeGYi (B:s (3OQGSI ai Yde GddZI GdMOjK (B/s - (3dWai (B: (3eUWais ((3HjQhJ (B:s (3eYgO GdGfeGA GdYQHi (B:s, 1981)
(3jTJed Ydi GQLGYGJ HHdjhLQGajI(B((3U(B237-241) s
Keywords: (3GddZI GdYQHjIs -- (3GdLhGfH GdGLJeGYjI s