Design the Flexibility, Maintain the Stability of Conceptual Schemas. - Lex Wedemeijer (CAiSE, 1999)

Semantical Change Patterns in the Conceptual Schema. - Lex Wedemeijer (ER (Workshops), 1999)

Defining Metrics for Conceptual Schema Evolution. - Lex Wedemeijer (FMLDO, 2000)

A method to ease schema evolution. - Lex Wedemeijer (IRMA Conference, 2000)

Evolution and Change in Data Management - Issues and Directions. - John F. Roddick; Lina Al-Jadir; Leopoldo E. Bertossi; Marlon Dumas; Florida Estrella; Heidi Gregersen; Kathleen Hornsby; Jens Lufter; Federica Mandreoli; Tomi Männistö; Enric Mayol; Lex Wedemeijer (SIGMOD Rec., 2000)

Engineering for Conceptual Schema Flexibility. - Lex Wedemeijer (RIDE-DM, 2001)

Conceptual Process Models: Using Process Architecture in Practice. - Lex Wedemeijer; E. G. A. J. de Bruin (DEXA Workshops, 2004)

Modular Behaviour Modelling of Service Providing Business Processes. - Ella E. Roubtsova; Lex Wedemeijer; Karel Lemmen; Ashley T. McNeile (ICEIS (3), 2009)

Behavioural model for a business rules based approach to model services. - Ella E. Roubtsova; Stef Joosten; Lex Wedemeijer (BM-FA, 2010)

Transformation of Imperative Workflows to Declarative Business Rules. - Lex Wedemeijer (BMSD, 2013)

An essential language for declarative business rules. - Lex Wedemeijer (CSERC, 2013)

A Language to Specify Declarative Business Rules. - Lex Wedemeijer (BMSD, 2014)