Multi-volume rendering using depth buffers for surgical planning in virtual reality. - Balázs Faludi; Marek Zelechowski; Maria Licci; Norbert Zentai; Attill Saemann; Daniel Studer; Georg Rauter; Raphael Guzman; Carol Hasler; Gregory F. Jost; Philippe C. Cattin (Int. J. Comput. Assist. Radiol. Surg., 2025)