@article{Bistarelli99,
author = "S. Bistarelli and H. Fargier and U. Montanari and F. Rossi and T. Schiex and G. Verfaillie",
journal = "Constraints",
pages = "199-240",
title = "{S}emiring-based {CSP}s and {V}alued {CSP}s: {F}rameworks,
                   {P}roperties and {C}omparison",
volume = "4",
year = "1999",
}