diff --git a/01_1_opac_vs_discovery-system.md b/01_1_opac_vs_discovery-system.md
index 459ccd5..bbe1921 100644
--- a/01_1_opac_vs_discovery-system.md
+++ b/01_1_opac_vs_discovery-system.md
@@ -1,2 +1,7 @@
 # OPAC vs. Discovery-System
 
+[![Screenshot Christensen 2014](images/screenshot-christensen-2014.png)](http://www.slideshare.net/xenzen/discoverysysteme-zwischenbilanz-fr-eine-bibliothekarische-lsung-in-einer-postbibliothekarischen-welt)
+
+
+## Kernpunkte
+* ...
\ No newline at end of file