Zhang X, Wu J, Smith LM, Li X, Yancey O, Franzblau A, Dvonch JT, Xi C, Neitzel RL. Monitoring SARS-CoV-2 in air and on surfaces and estimating infection risk in buildings and buses on a university campus. J Expo Sci Environ Epidemiol. 2022 Sep;32(5):751-758. doi: 10.1038/s41370-022-00442-9. Epub 2022 Apr 27. PMCID: PMC9045468.
You can also find it in PubMedCentral by licking here.