@Article{	  dixsto98,
  author	= {J\"{u}rgen Dix and Frieder Stolzenburg},
  title		= {A {F}ramework to incorporate {N}onmonotonic {R}easoning
		  into {C}onstraint {L}ogic {P}rogramming},
  journal	= {Journal of Logic Programming},
  year		= {1998},
  volume	= {37(1,2,3)},
  pages		= {47---76},
  note		= {Special Issue on {\em Constraint Logic Programming}, Guest
		  Editors: Kim Marriott and Peter Stuckey. }
}