Development of Tooling to Support Fact-Oriented Modeling at ESA. - Inge M. C. Lemmens; Francesco Sgaramella; Serge Valera (OTM Workshops, 2009)

Formal Specification of a Meta Hierarchical Logical Data Model Using Object Role Modeling. - Robert J. L. Schmaal; Herman Balsters; Serge Valera (OTM Workshops, 2011)

Achieving Interoperability at Semantic Level. - Inge M. C. Lemmens; Jean-Paul Koster; Serge Valera (OTM Workshops, 2015)