(3GdJhGHjf (B/s - (3GHf bOGeI, YHO Gddg Hf CMeO,s 541-620 (3g`(B.s; (3GdYdej, NGdO YHO GddWja GdSHYs ((3HjQhJ (B:s (3OGQ GdcJGH GdYQHj,s, 1994)
Keywords: (3hYX hGQTGOs -- (3GdJhHI s