@@ -45,3 +45,9 @@ performance difference between pleated hydrophobic filters and electrostatic fil
[^stability]:[Aeorsol and surface stability of HCoV-19 compared to SARS-CoV-1](https://www.medrxiv.org/content/10.1101/2020.03.09.20033217v1.full.pdf?__cf_chl_jschl_tk__=e5c36168cc7402ab11178538c0ef5fdd2b8c8cbd-1584464414-0-AfohFaEsIDDjmqQ6YEGAmPrX14_fYwDCairndak5B58MzTDypSP7pDWh1jiStM9Xr_70C8k2y_R4fLiH9CFS5W4Y8Q3u3jMABGFCptEt34BXergTOg1G120143eK6Wib1g34BQflq9yKQ5kuuKjU7or6pxdvmtOIsI45onaedQTa8Ioxpo-tMjo83zh6akUTE8BynDs6RQSLB-Ey8zsmuVgG4KLh38sb-sNoxZGizcaBZ7QmCUQVEZlzBKlbKMpAqBCvSOizA0FD2LgWVBFa1UlJ1DYF-l0_-hC0xFvK3lsbZHriRizQA_KZqylQ9l9QFMQo3642MuAGGRCbzwkcC_0)
[^aerodynamics]:[Aerodynamic Characteristics of RNA concetration of SARS-CoV-2](https://www.biorxiv.org/content/10.1101/2020.03.08.982637v1.abstract)
[^nelson]:[Nelson Laboratories: Viral Filtration Efficiency (VFE) at increased challenge level](https://gitlab.cba.mit.edu/pub/coronavirus/tracking/uploads/164d119b5a7a5751c685a6677378668a/ER_2235600_Attachment_5_Viral_Filtration_Efficiency.pdf)
