(3CSQGQ Ndb GdEfSGf (B:s (3GdYLGFH aj GdUdH hGdJQGFH (B/s - (3GdSYOj, OGhO SdeGfs ((3HjQhJ (B:s (3OGQ GdMQa GdYQHj ddWHGYI hGdfTQ hGdJhRjY,s, 1994)
(3HHdjhLQGajI (B: (3U(B. 215-217.s
Keywords: (3GdbQBfs -- (3EYLGRs; (3GdEfSGfs; (3GdNdbs