Pes, Giulia, Angelica Lo Duca, and Andrea Marchetti. “Towards a Sentiment Analysis of Tweets from Online Newspapers Regarding the Coronavirus Pandemic”. HighTech and Innovation Journal 2, no. 4 (December 1, 2021): 359–372. Accessed September 20, 2025. https://www.hightechjournal.org/index.php/HIJ/article/view/129.