Cover image credits

The cover image credits are as follows. Front, Top-Right: "An Empirical Evaluation of Virtual Hand Techniques for 3D Object Manipulation in a Tangible Augmented Reality Environment" by Taejin Ha, and Woontack Woo, page 91. Front, Top-Left: "Evaluating Natural Interaction Techniques in Video Games," by Ryan P. McMahan, Alexander Joel D. Alon, Shaimaa Lazem, Robert J. Beaton, David Machaj, Michael Schaefer, Mara G. Silva, Anamary Leal, Robert Hagan, and Doug A. Bowman, page 11. Front, Bottom: "The Design and Evaluation of 3D Positioning Techniques for Multi-touch Displays," by Anthony Martinet, Gery Casiez, and Laurent Grisoni, page 115. Back, Top: "What Do You Do When Two Hands Are Not Enough? Interactive Selection of Bonds Between Pairs of Tangible Molecules," by Patrick Maier, Marcus Tonnis, Gudrun Klinker, Alexander Raith, Markus Drees, and Fritz Kuhn, page 83. Back, Middle: VRM Team: Maxim Lysak, Viktor Kuropyatnik; 3DUI demo for 3DUI Grand Prize 2010; 3DUI Contest 2010. Back, Bottom: "Piivert: Percussion-based Interaction for Immersive Virtual EnviRonments," by Florent Berthaut, Martin Hachet, and Myriam Desainte-Catherine, page 15.