Indraccolo U. Assessing the ratio between new Covid-19 cases and new tests for Sars-Cov-2 in Italy by fractal investigation. Acta Biomed [Internet]. 2021 Jul. 1 [cited 2024 Jul. 17];92(3):e2021188. Available from: https://mattioli1885journals.com/index.php/actabiomedica/article/view/10323