ОПРЯ, А. Т. SCIENTIFIC CONCEPTION OF STATISTICAL METHODOLOGY: METHODS, INDEXES, CRITERIA OF RELIABILITY. Scientific Progress & Innovations, [S. l.], n. 2, p. 109–119, 2013. DOI: 10.31210/visnyk2013.02.31. Disponível em: https://journals.pdau.edu.ua/visnyk/article/view/592. Acesso em: 24 aug. 2025.