diff --git a/README.md b/README.md
index 20c0ca0..de4d8cb 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ In particular this shall cover systems like:
* Variable frequency systems, e.g. in wind turbines or for drive control, and
* DC power systems, like HVDC
-See also the publication [Franke, Wiesmann: Flexible modeling of electrical power systems - the Modelica PowerSystems library, Modelica conference 2014](https://ep.liu.se/ecp/096/054/ecp14096054.pdf).
+See also the publication [Franke, Wiesmann: Flexible modeling of electrical power systems - the Modelica PowerSystems library, Modelica conference 2014](https://doi.org/10.3384/ECP14096515).