(3GdWad GddHfGfj ef (B6 (3Gdi (B7 (3SfhGJ eTcdGJg hGMJjGLGJgs - (3jYbhH, ZSGf s; (3GdeQcR GdJQHhj ddHMhK hGdGfeGAs ((3HjQhJ (B: s (3GdeQcR GdJQHhj ddHMhK hGdGfeGAs, 1980)
Keywords: (3GdCWaGd (B-- (3dHfGfs; (3QYGjI GdGWaGd (B-- (3dHfGfs