Interactive simulation and comparative visualisation of the bone-determined range of motion of the human shoulder. - Peter R. Krekel; Charl P. Botha; Edward R. Valstar; Paul W. de Bruin; Piet M. Rozing; Frits H. Post (SimVis, 2006)

Pre-operative Planning and Intra-operative Guidance for Shoulder Replacement Surgery. - Charl P. Botha; Peter R. Krekel; Edward R. Valstar; Paul W. de Bruin; Piet M. Rozing (Scientific Visualization: Advanced Concepts, 2010)

Combined surface and volume processing for fused joint segmentation. - Peter R. Krekel; Edward R. Valstar; Frits H. Post; Piet M. Rozing; Charl P. Botha (Int. J. Comput. Assist. Radiol. Surg., 2010)

Visual Analysis of Multi-Joint Kinematic Data. - Peter R. Krekel; Edward R. Valstar; Jurriaan H. De Groot; Frits H. Post; Rob G. H. H. Nelissen; Charl P. Botha (Comput. Graph. Forum, 2010)