Haug, Gerald H. Climate Geochemistry, Max Planck Institute for Chemistry, Max Planck Society;
https://www.leopoldina.org/uploads/tx_leopublication/2020_04_13_Coronavirus-Pandemie-Die_Krise_nachhaltig_%C3%BCberwinden_final.pdf (Any fulltext)
Brockmann, D., Dreier, H., Feld, L., Fiedler, K., Friedrich, B., Fuest, C., et al. (2020). Coronavirus-Pandemie — Die Krise nachhaltig überwinden.