+ (PDF) Consolidation in a crisis: Patterns of international collaboration in early COVID-19 research, by Caroline V. Fry, Xiaojing Cai, Yi Zhang, Caroline S. Wagner – Editor: Lutz Bornmann, Max Planck Society, GERMANY (July 21, 2020).
+ (PDF) Impact of COVID-19 Pandemic on Flu and COVID-19 Vaccination Intentions among University Students, by Pastorino, R.; Villani, L.; Mariani, M.; Ricciardi, W.; Graffigna, G.; Boccia, S. – Vaccines, from www.mdpi.com (2021).
+ (PDF) Biosecurity Perspectives in Oral and Maxillofacial Radiology in Times of Coronavirus disease (COVID-19): a Literature Review, by Pieralisi, N.; Souza-Pinto, G. N.; Iwaki, V. L. C.; Chicarelli-Silva, M. & Tolentino, S. E. – Int. J. Odontostomat. (2021).
+ (PDF) What POST-COVID-19 lifestyles may look like? Identifying scenarios and their implications for sustainability, by Fabián Echegaray – Institution of Chemical Engineers. Published by Elsevier B.V. (2021).