Kawata, Yashimasa, Masatoshi Tsuji, and Wataru Inami. “Femtosecond Photonics for Three-Dimensional High Density Optical Data Storage”. Journal of Automation, Mobile Robotics and Intelligent Systems 3, no. 4 (December 22, 2009): 9–11. Accessed May 9, 2025. https://www.jamris.org/index.php/JAMRIS/article/view/32.