Li, Yun, Li, Moming, Rice, Megan, and Yang, Chaowei. Impact of COVID-19 containment and closure policies on tropospheric nitrogen dioxide: A global perspective. Retrieved from https://par.nsf.gov/biblio/10300677. Environment International 158.C Web. doi:10.1016/j.envint.2021.106887.

Li, Yun, Li, Moming, Rice, Megan, & Yang, Chaowei. Impact of COVID-19 containment and closure policies on tropospheric nitrogen dioxide: A global perspective. Environment International, 158 (C). Retrieved from https://par.nsf.gov/biblio/10300677. https://doi.org/10.1016/j.envint.2021.106887

Li, Yun, Li, Moming, Rice, Megan, and Yang, Chaowei. "Impact of COVID-19 containment and closure policies on tropospheric nitrogen dioxide: A global perspective". Environment International 158 (C). Country unknown/Code not available. https://doi.org/10.1016/j.envint.2021.106887. https://par.nsf.gov/biblio/10300677.

@article{osti_10300677,
place = {Country unknown/Code not available}, title = {Impact of COVID-19 containment and closure policies on tropospheric nitrogen dioxide: A global perspective}, url = {https://par.nsf.gov/biblio/10300677}, DOI = {10.1016/j.envint.2021.106887}, abstractNote = {}, journal = {Environment International}, volume = {158}, number = {C}, author = {Li, Yun and Li, Moming and Rice, Megan and Yang, Chaowei}, editor = {null} }