Kroll, Jesse H., Heald, Colette L., Cappa, Christopher D., Farmer, Delphine K., Fry, Juliane L., Murphy, Jennifer G., and Steiner, Allison L. The complex chemical effects of COVID-19 shutdowns on air quality. Retrieved from https://par.nsf.gov/biblio/10299863. Nature Chemistry 12.9 Web. doi:10.1038/s41557-020-0535-z.

Kroll, Jesse H., Heald, Colette L., Cappa, Christopher D., Farmer, Delphine K., Fry, Juliane L., Murphy, Jennifer G., & Steiner, Allison L. The complex chemical effects of COVID-19 shutdowns on air quality. Nature Chemistry, 12 (9). Retrieved from https://par.nsf.gov/biblio/10299863. https://doi.org/10.1038/s41557-020-0535-z

Kroll, Jesse H., Heald, Colette L., Cappa, Christopher D., Farmer, Delphine K., Fry, Juliane L., Murphy, Jennifer G., and Steiner, Allison L. "The complex chemical effects of COVID-19 shutdowns on air quality". Nature Chemistry 12 (9). Country unknown/Code not available. https://doi.org/10.1038/s41557-020-0535-z. https://par.nsf.gov/biblio/10299863.

@article{osti_10299863,
place = {Country unknown/Code not available}, title = {The complex chemical effects of COVID-19 shutdowns on air quality}, url = {https://par.nsf.gov/biblio/10299863}, DOI = {10.1038/s41557-020-0535-z}, abstractNote = {}, journal = {Nature Chemistry}, volume = {12}, number = {9}, author = {Kroll, Jesse H. and Heald, Colette L. and Cappa, Christopher D. and Farmer, Delphine K. and Fry, Juliane L. and Murphy, Jennifer G. and Steiner, Allison L.}, editor = {null} }