Kolmakova, L. N. “Exponents of Elements of a Normal Basis of the Ideal of Algebraic Functions on a Three-Sheeted Riemannian Surface”. Ukrains’kyi Matematychnyi Zhurnal 47, no. 8 (August 25, 1995): 1029–1037. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/5500.