• Bekbulat, B., J. S. Apte, D. B. Millet, A. Robinson, K. C. Wells, J. D. Marshall: PM 2.5 and ozone air pollution levels have not dropped consistently across the US following societal covid response, ChemRxiv, https://doi.org/10.26434/chemrxiv.12275603.v3, 2020.
  • Cicala, S., S. P. Holland, E; T. mansur, N. Z. Muller, A. J. Yates: Expected health effects of reduced air pollution from COVID-19 social distancing, http://www.nber.org/papers/w27135, 2020.
  • Huang, X., A. Ding, J. Gao, B. Zheng, D. Zhou, X. Qi, R. Tang, C. Ren, W. Nie, X. Chi, et al.: Enhanced secondary pollution offset reduction of primary emissions during COVID-19 lockdown in China. EarthArXiv, https://eartharxiv.org/hvuzy/, 2020.
  • Liu, F., A. Page, S. A. Strode, Y. Yoshida, S. Choi, B. Zheng, L. N. Lamsal, C. Li, N. A. Krotkov, H. Eskes, R. van der A, P. Veefkind, J. Joiner, O. P. Hauser: Abrupt declines in tropospheric nitrogenic oxide over China after the outbreak of COVID-19.  https://arxiv.org/abs/2004.06542, 2020.
  • Petetin, H., Bowdalo, D., Soret, A., Guevara, M., Jorba, O., Serradell, K., and Pérez García-Pando, C.: Meteorology-normalized impact of COVID-19 lockdown upon NO2 pollution in Spain, Atmospheric Chemistry and Physics Discussions, https://doi.org/10.5194/acp-2020-446, in review, 2020.
  • Wu, X., R. C. Nethery, B. M. Sabath, D. Braun, and F. Dominici: Exposure to air pollution and COVID-19 mortality in the United States: A nationwide cross-sectional study, MedRxiv, https://doi.org/10.1101/2020.04.05.20054502, 2020.