(3GdJfSjb Hjf eQGcR GdHMhK aj GdOhd GdYQHjI (B:s (3CHMGK GdfOhI GdYdejI GdKGfjI(B-(3GdNWI GdCefjI GdhbGFjI GdYQHjI GdChdi (B/s - (3GdfOhI GdYdejI Mhd GdJfSjb Hjf eQGcR GdHMhK aj GdOhd GdYQHjIs 1983 : (3GdQjGV(B)s; (3GdeQcR GdYQHj ddOQGSGJ GdCefjI hGdJOQjH (B((3GdQjGV(B)s ((3GdQjGV (B:s (3GdeQcR GdYQHj ddOQGSGJ GdCefjI,s, 1986)
Keywords: (3GdHMKs -- (3GdHdGO GdYQHjIs; (3GdCef Gdbhejs -- (3HMhKs -- (3GdHdGO GdYQHjIs