V. A. Glavan, “On equicontinuous factors of linear extensions of minimal dynamical systems”, Ukr. Mat. Zhurn., vol. 45, no. 2, pp. 233–238, Feb. 1993, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/5803