@article{verschuur2021global, title = {Global economic impacts of COVID-19 lockdown measures stand out in high-frequency shipping data} author = {Verschuur, Jasper and Koks, Elco E. and Hall, Jim W.}, journal = {PLOS ONE}, url = {https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0248818}, year = {2021} }