The Message Paradigm in Object-Oriented Analysis. - Frank Devos; Eric Steegmans (UML, 2001)

Specialization/Generalization in Object-Oriented Analysis: Strengthening and Multiple Partitioning. - Pieter Bekaert; Geert Delanote; Frank Devos; Eric Steegmans (OOIS Workshops, 2002)

Specifying business rules in object-oriented analysis. - Frank Devos; Eric Steegmans (Softw. Syst. Model., 2005)