Oikkonen, Juha, and Jani Hannula. “The Three Worlds and Two Sides of Mathematics and a Visual Construction for a Continuous Nowhere Differentiable Function”. LUMAT: International Journal on Math, Science and Technology Education 10, no. 2 (June 30, 2022): 7–32. Accessed November 24, 2024. https://journals.helsinki.fi/lumat/article/view/1693.