Practice of Enterprise Modeling 12th IFIP Working Conference, PoEM 2019, Luxembourg, Luxembourg, November 27–29, 2019, Proceedings Gordijn Jaap Heftet / 2019 / Engelsk
Advanced Information Systems Engineering 21st International Conference, CAiSE 2009, Amsterdam, The Netherlands, June 8-12, 2009, Proceedings van Eck, Pascal Heftet / 2009 / Engelsk
