diff --git a/examples/ids.Rmd b/examples/ids.Rmd
index 013b7bc..34c1f5f 100644
--- a/examples/ids.Rmd
+++ b/examples/ids.Rmd
@@ -103,7 +103,9 @@
     addExamples = T
   )
 ```
-  
+See [@kupietz_rkorapclient_2020]
+See [@kupietz-deliko2026]
+
 ## Source Code
 ### Print Collocation Analysis as DataTable