VoznaS. M., Kuchmins’kaKh. Yo., and Sus’О. M. “Approximation Properties of Two-Dimensional Continued Fractions”. Ukrains’kyi Matematychnyi Zhurnal 55, no. 1 (January 25, 2003): 30-44. Accessed July 27, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3885.