Shen, K.; Schimpf, J. (2005). "Eplex: Harnessing Mathematical Programming Solvers for Constraint Logic Programming". Principles and Practice of Constraint Programming - CP 2005. Lecture Notes in Computer Science. Vol. 3709. Principles and Practice of Constraint Programming - CP 2005: 11th International Conference, CP 2005, Sitges: Springer. pp. 622–636. doi:10.1007/11564751_46. ISBN978-3-540-32050-0.{{cite book}}: CS1 maint: location (link)