(3Jbjje GdGSJKeGQGJ GdafObjI (B/ s - (3MGeO GdYQHi GdMVjQis ((3GdbGgQI (B: s (3OGQ GdcJH GdYdejI ddfTQ hGdJhRjY , s, 1999)
Keywords: (3GdafGObs; (3GdafGOb hGdSjGMIs; (3GdafGOb (B- (3eUQs