(3GdeDJeQ GdChd ddJMcje ai GdefGRYGJ GdgfOSjI (B: s (3HfbGHI GdegfOSjf (B/ s - (3eMeO eGLO NdhUi (B.s ((3GdbGgQI (B:s (3LeYjI GdegfOSjf GdESJTGQjjf ,s, 1991)
Keywords: (3JMcje GEdfTGAGJ (B. s; (3GdJMcje ai GdefGRYGJ GdgfOSjI (B. s