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-rw-r--r--buch/papers/nav/references.bib2
1 files changed, 1 insertions, 1 deletions
diff --git a/buch/papers/nav/references.bib b/buch/papers/nav/references.bib
index 10dbf66..c67aaac 100644
--- a/buch/papers/nav/references.bib
+++ b/buch/papers/nav/references.bib
@@ -35,7 +35,7 @@
@online{nav:winkel,
editor={Unbekannt},
title = {Sphärische Trigonometrie},
- year={2022}
+ year={2022},
url = {https://de.wikipedia.org/wiki/Sphärische_Trigonometrie}
}