diff --git a/content/zettels/temperature_control.md b/content/zettels/temperature_control.md
index 954dd50..d8a90c7 100644
--- a/content/zettels/temperature_control.md
+++ b/content/zettels/temperature_control.md
@@ -19,9 +19,11 @@ An active temperature control system generally consists of:
 -   <https://www.thinksrs.com/products/tempcontrol.html>
 -   <https://www.thorlabs.com/thorproduct.cfm?partnumber=TC300B>
 -   <https://www.vescent.com/manuals/doku.php?id=slice:qt>
+-   CN16DPT-305-EIP-DC, OMEGA Inc. (<a href="#citeproc_bib_item_1">Holler et al. 2022</a>)
 
 
 ## Bibliography {#bibliography}
 
 <style>.csl-entry{text-indent: -1.5em; margin-left: 1.5em;}</style><div class="csl-bib-body">
+  <div class="csl-entry"><a id="citeproc_bib_item_1"></a>Holler, Mirko, Tomas Aidukas, Lars Heller, Christian Appel, Nicholas W. Phillips, Elisabeth Müller-Gubler, Manuel Guizar-Sicairos, Jörg Raabe, and Johannes Ihli. 2022. “Environmental Control for X-Ray Nanotomography.” <i>Journal of Synchrotron Radiation</i> 29 (5): 1223–31. doi:<a href="https://doi.org/10.1107/s1600577522006968">10.1107/s1600577522006968</a>.</div>
 </div>
diff --git a/content/zettels/temperature_sensors.md b/content/zettels/temperature_sensors.md
index 565c48b..093edee 100644
--- a/content/zettels/temperature_sensors.md
+++ b/content/zettels/temperature_sensors.md
@@ -192,6 +192,9 @@ The huge advantage of RTD compared to PT100 is that the sensitivity is much larg
 ## Commercial Temperature Sensors {#commercial-temperature-sensors}
 
 
+### 20 degC {#20-degc}
+
+
 ### 20 degC, Vacuum compatible {#20-degc-vacuum-compatible}
 
 From (<a href="#citeproc_bib_item_2">Neto et al. 2022</a>), UHV compatible: