Cristina-Mihaela, Chichirez. “Variability of Atmospheric Cloudiness and Sunshine Duration in the Câmpulung Muscel Depression (Argeș – România)”. RA Journal Of Applied Research 5, no. 01 (January 8, 2019): 2233–2241. Accessed April 26, 2024. http://www.rajournals.in/index.php/rajar/article/view/468.