diff --git a/iap21.md b/iap21.md
index 17d04ea1f..c4b17afc6 100644
--- a/iap21.md
+++ b/iap21.md
@@ -2,10 +2,17 @@
 
 - A [[workshop]].
 - By [[underlay]].
+- [[pull]] 
 - [[go]] https://knowledgestructure.pubpub.org/iap21
 
+## [[2021-01-25]]
+
+- [[topic]] [[exploration]]: structuring [[collective knowledge]] (developing a case study).
+
 
 [//begin]: # "Autogenerated link references for markdown compatibility"
 [underlay]: underlay "Underlay"
+[pull]: pull "Pull"
 [go]: go "Go"
+[2021-01-25]: journal/2021-01-25 "2021-01-25"
 [//end]: # "Autogenerated link references"
\ No newline at end of file