diff --git a/content/zettels/two_stage_actuator.md b/content/zettels/two_stage_actuator.md
index 6ee96a7..6e74c91 100644
--- a/content/zettels/two_stage_actuator.md
+++ b/content/zettels/two_stage_actuator.md
@@ -17,8 +17,6 @@ The goal is therefore to obtain a long stroke high precision stage.
 
 ## Review {#review}
 
-(<a href="#citeproc_bib_item_9">Pahk, Lee, and Park 2001</a>)
-
 <a id="table--tab:introduction-dual-stages"></a>
 <div class="table-caption">
   <span class="table-number"><a href="#table--tab:introduction-dual-stages">Table 1</a>:</span>