Zerefos, C.S. Solomos, S. Kapsomenakis, J. Poupkou, A. Dimitriadou, L. Polychroni, I.D. Kalabokas, P. Philandras, C.M. Thanos, D., Lessons learned and questions raised during and post-COVID-19 anthropopause period in relation to the environment and climate, Environment, Development and Sustainability, (23), 10623-10645, 2021, Springer Science and Business Media B.V., 1387-585X, 1573-2975