1
Book
Authors: Fages, François, Rizk, Aurélien
Superior Title: Principles & Practice of Constraint Programming - Cp 2009; 2009, p319-334, 16p
2
Academic Journal
Authors: Zeuner, Hansmartin
Superior Title: Mathematische Zeitschrift; 1985, Vol. 189 Issue 4, p529-554, 26p