@article{1292501, author = {Matthew Staymates}, title = {Flow visualization of an N95 respirator with and without an exhalation valve.}, year = {2020}, month = {2020-11-10 05:11:00}, publisher = {Physics of Fluids}, url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=931235}, language = {en}, }