Update README.md

README.md

@@ -44,6 +44,7 @@
     - David
         - https://www.crr.columbia.edu/research/using-power-light-preventing-airborne-spread-coronavirus-and-influenza-virus
         - https://www.nature.com/articles/s41598-018-21058-w.pdf
+        - https://gitlab.cba.mit.edu/pub/coronavirus/tracking/-/blob/master/docs/20.04.UVC.pdf
     - Kohshi, Alfonso
         - https://gitlab.cba.mit.edu/alfonso/aluminum-lattices-for-custom-uv-c-racks
     - ? Josef