Volf, Jaromir, Martin Dvořak, and Josef Vlcek. “Methods for Classification of Tactile Patterns in General Position by Helmhot’s Equation”. Journal of Automation, Mobile Robotics and Intelligent Systems 2, no. 4 (November 22, 2008): 59–63. Accessed April 30, 2025. https://www.jamris.org/index.php/JAMRIS/article/view/620.