Update README.md

README.md

@@ -45,6 +45,9 @@
         - https://www.nature.com/articles/s41598-018-21058-w.pdf
     - Kohshi, Alfonso
         - https://gitlab.cba.mit.edu/alfonso/aluminum-lattices-for-custom-uv-c-racks
+    - ? Josef
+        - https://www.prusa3d.com/covid19/
+        - https://help.prusa3d.com/en/article/prusa-face-shield-disinfection_125457
     - Juanma, Carlos, Alvaro
         - https://www.airbus.com/
     - Fred