[1]
O. Andreeva, V. Abramenko, and V. Malashchuk, “Cyclic variations in the areas of coronal holes and sunspots in 2010–2021”, Acta Astrophys. Tau., vol. 5, no. 3, pp. 14–17, Sep. 2024, Accessed: Mar. 22, 2026. [Online]. Available: https://astrophysicatauricum.org/index.php/aat/article/view/87