Do Self-Statements Enhance the Effectiveness of Virtual Reality Exposure Therapy? A Comparative Evaluation in Acrophobia. - Merel Krijn; Paul M. G. Emmelkamp; Ragnar Olafsson; Martijn J. Schuemie; Charles van der Mast (Cyberpsychology Behav. Soc. Netw., 2007)

Ultrasound Current Source Density Imaging. - Ragnar Olafsson; Russell S. Witte; Sheng-Wen Huang; Matthew O'Donnell (IEEE Trans. Biomed. Eng., 2008)