V. A. Kofanov, “On exact Bernstein-type inequalities for splines”, Ukr. Mat. Zhurn., vol. 58, no. 10, pp. 1357–1367, Oct. 2006, Accessed: Feb. 16, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/3538