Przystup, Piotr, Adam Bujnowski, Jacek Rumiński, and Jerzy Wtorek. “A Detector of Sleep Disorders for Using at Home”. Journal of Telecommunications and Information Technology 56, no. 2 (June 30, 2014): 70–78. Accessed May 23, 2026. https://www.jtit.pl/jtit/article/view/1025.