OKONIEWSKA, Monika. Diurnal course of cloud cover in Poland in the following decades of the year (based on years 1990-2000). Journal of Education, Health and Sport, [S. l.], v. 6, n. 10, p. 730–740, 2017. Disponível em: https://apcz.umk.pl/JEHS/article/view/4137. Acesso em: 28 jun. 2025.