@techreport{Hacid&al97a,
   author = {M. S. Hacid and P. Marcel and C. Rigotti},
   booktitle = {Proc. of the 5th Intl. Conf. on Deductive and Object-Oriented
                  Databases (DOOD'97)},
   institution = {LuFg Theoretical Computer Science, RWTH Aachen},
   note = {A short version has appeared in the Proceedings of the 5th
                  International Conference on Deductive and Object-Oriented
                  Databases (DOOD'97), Montreux, Switzerland},
   number = {LTCS-97-05},
   publisher = {SPRINGER},
   series = {LNCS},
   title = {A rule based data manipulation language for {OLAP} systems},
   type = {LTCS-Report},
   year = {1997}
}