(3GdJaGhV chSjdI dEfgGA GdCReI aj GdMOK GdEQgGHj eY OQGSI MGdJjf (B:s (3GNJWGa WGFQI hGMJLGR QgGFf (B/s - (3GdRgQGfj, eMeO TQa eMeOs; (3GdgdGdj, fTCJ YKeGf s (1993)
(3HHdjhLQGajI (B: (3hQbI (B250-258.s
(3jTJed Ydi eSJNdU HGddZJjf GdYQHjI hGdEfLdjRjI(B.s
Keywords: (3GdEQgGH s -- (3ecGaMI s; (3QSGdI LGeYjI (B((3eGLSJjQ(B)s