MASSIMO DONELLI; GIUSEPPE ESPA. A Crowd Monitoring Methodology based on the Analysis of the Electromagnetic Spectrum. Global Journals of Research in Engineering, [S. l.], v. 21, n. F1, p. 39–47, 2021. DOI: 10.34257/GJREFVOL21IS1PG39. Disponível em: https://engineeringresearch.org/index.php/GJRE/article/view/2119. Acesso em: 4 may. 2024.