(3GdhLjR aj PcQ GdeLGR hGdeLjR (B/s - (3GdSdaj, CMeO Hf eMeO Hf SdaI,s 478-576 (3g`(B.s; (3GdHbGYj, eMeO NjQ eMehOs ((3HjQhJ (B:s (3OGQ GdZQH GdESdGej,s, 1991)
(3HHdjhLQGajI (B: (3U(B. 197-204.s
Keywords: (3GdMOjKs -- (3GdLQM hGdJYOjds; (3GdMOjKs -- (3QhGjIs