(3CMcGe GdChbGa (B/s - (3GdNUGa , CHj HcQ CMeO Hf YeQ GdTjHGfjs (3J(B. 261 (3g`s; (3TGgjf, eMeO YHO GdSdGes ((3HjQhJ (B:s (3OGQ GdcJH GdYdejI,s, 1999)
Keywords: (3Gdhba (B((3abg ESdGej(B)s