(3GdEYLGR GdHjGfj aj UjZ GdCdaGX (B: s (3OQGSI JMdjdjI ddGaQGO hGdLeY aj GdbQBf (B/ s - (3GdNVQj, eMeO GdCejfs ((3GdbGgQI (B: s, 1993)
Keywords: (3GdbQBf GdcQje(B.s; (3GdHdGZI(B.s; (3GddZI GdYQHjI(B.s