The University of Melbourne, Australia

Professor of GIS technology, Delft University of Technology

hoogleraar land administration, Universiteit Twente

Em. Prof. Land Information Modeling, ITC, University of Twente

Professor i land management Aalborg Universitet

Professor, Swinburne University of Technology, Australia

Professor of Geomatics, Istanbul Technical University, Turkey

Technical University Munich, Germany

Namibia University of Science and Technology