(3Yde GdGLJeGY GdLeGgjQj h HfGA GdGJUGd (B/s - (3eMeO GSeGYjd , bHGQj s ([(3Ohf ecGf(B] :s (3efTCI GdeYGQa ,s, 1992)
Keywords: (3GdGLJeGY s; (3GdLeGgjQj s; (3HfGAs; (3Ydes