add UL scientific computing rstudio servers

rstudio1.md

@@ -94,3 +94,14 @@ There are some other servers which have R and RStudio (desktop version) installe
 - idivts6.idiv.de Biocon windows 2012r2 terminal server but restricted access
 - idivts7.idiv.de windows 2012r2 terminal server
 - idivts8.idiv.de windows 2012r2 terminal server
+
+### External resources available to you
+Be aware that we do not control external resources and that you can connect
+your iDiv network shares directly.
+
+### Scientific Computing at the University of Leipzig
+The UL department [Scientific
+Computing](https://www.urz.uni-leipzig.de/de/fue/sc/) makes a set of [rstudio
+servers](https://www.urz.uni-leipzig.de/de/fue/sc/rstudio/] available as well.
+If you do not have an UL scientific computing account you can simply register
+one (https://register.sc.uni-leipzig.de/).