Bareikis, Gintautas, and Algirdas Maciulis. “Some Applications of IFS Based on Square Symmetries”. Nonlinear Analysis: Modelling and Control 17, no. 1 (January 25, 2012): 16–26. Accessed May 18, 2024. https://www.journals.vu.lt/nonlinear-analysis/article/view/14075.