diff --git a/slides/chapter-14.de.md b/slides/chapter-14.de.md
index 068b017..690bb4d 100644
--- a/slides/chapter-14.de.md
+++ b/slides/chapter-14.de.md
@@ -89,13 +89,7 @@ Durch BibTeX wird LaTeX um einige Befehle zum Zitieren erweitert. Außerdem ben
 @slide(layout=preview-only)
 
 @preview
-![Finden von fertigen BibTeX-Einträgen – Wikipedia](svg/chapter-14/wikipedia_bibtex_1.jpg){.large}
-
-
-@slide(layout=preview-only)
-
-@preview
-![Finden von fertigen BibTeX-Einträgen – Wikipedia](svg/chapter-14/wikipedia_bibtex_2.jpg){.large}
+![Finden von fertigen BibTeX-Einträgen – dblp.org](svg/chapter-14/dblp.jpg){.large}
 
 
 @slide(layout=wide-task)
diff --git a/slides/chapter-14.en.md b/slides/chapter-14.en.md
index b6e2713..c1606e2 100644
--- a/slides/chapter-14.en.md
+++ b/slides/chapter-14.en.md
@@ -89,13 +89,7 @@ BibTeX adds some citation commands to LaTeX. In addition, we need the `natbib` p
 @slide(layout=preview-only)
 
 @preview
-![Finding ready-made BibTeX entries – Wikipedia](svg/chapter-14/wikipedia_bibtex_1_en.jpg){.large}
-
-
-@slide(layout=preview-only)
-
-@preview
-![Finding ready-made BibTeX entries – Wikipedia](svg/chapter-14/wikipedia_bibtex_2_en.jpg){.large}
+![Finding ready-made BibTeX entries – dblp.org](svg/chapter-14/dblp.jpg){.large}
 
 
 @slide(layout=wide-task)
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