Enolskii, V. Z., and A. Yu. Kondratev. “Jacobi Polynomials and Lax Representation for Completely Integrable Dynamical Systems”. Ukrains’kyi Matematychnyi Zhurnal 46, no. 8 (August 25, 1994): 1088–1091. Accessed April 7, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/5663.