Sakow, Mateusz. “Design of Small-Phase Time-Variant Low-Pass Digital Fractional Differentiators and Integrators”. Journal of Automation, Mobile Robotics and Intelligent Systems 18, no. 2 (May 6, 2025): 72–82. Accessed July 17, 2025. https://jamris.d.tomp.pl/index.php/JAMRIS/article/view/1101.