Dandoloff, Rossen. “Knotted Configurations in the Continuous Heisenberg Spin Chain With Lower Bound of the Energy”. European Journal of Applied Sciences 11, no. 3 (July 19, 2023): 825–828. Accessed April 3, 2025. https://journals.scholarpublishing.org/index.php/AIVP/article/view/12083.