inproceedings{wflp03,
        title = {{A Safe Relational Calculus for Functional 
                 Logic Deductive Databases}},
        author = {J. M. {Almendros-Jim\'enez} and A. {Becerra-Ter\'on}},
        year = {2003},
        booktitle = {Proc. of 12th International Workshop on Functional
                 and (Constraint) Logic Programming, WFLP03},
        publisher = {Universidad Polit\'ecnica de Valencia},
        pages = {212--226},
}