(3GdNUGFU GdGLJeGYjI hGdYhGed GdELQGFjI GdeDKQI Ydi ehba GdLeghQ ef GdHdGZ Yf GdLQjeI (B:s (3OQGSI JWHjbjI HeOjfI MGFd (B/s - (3GdefUhQ, agO Ydj YHO Gddgs; (3ZGfe, YHO Gddg YHO GdZfj s (1991)
(3HHdjhLQGajI (B: (3hQbI (B197-204.s
(3jTJed Ydi eSJNdU HGddZJjf GdYQHjI hGdEfLdjRjI(B.s
Keywords: (3ecGaMI GdLQjeIs -- (3GdSYhOjIs -- (3MGFds; (3QSGdI LGeYjI (B((3eGLSJjQ(B)s