OOC: An Object Oriented Constraint Model. - Veronique Puig; Chabane Oussalah (SCAI, 1995)

Combining Constraints and Objects. - Mourad Chabane Oussalah; Veronique Puig (SEKE, 1995)

Integrating Constraints in Complex Objects. - Chabane Oussalah; Veronique Puig (CIKM, 1996)

Constraints and Composite Objects. - Veronique Puig; Chabane Oussalah (DEXA, 1996)