diff --git a/content/inproceedings/henein10_flexur.md b/content/inproceedings/henein10_flexur.md
new file mode 100644
index 0000000..707d5b5
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+++ b/content/inproceedings/henein10_flexur.md
@@ -0,0 +1,24 @@
++++
+title = "Flexures: simply subtle"
+author = ["Dehaeze Thomas"]
+draft = true
++++
+
+Tags
+:
+
+
+Reference
+: (<a href="#citeproc_bib_item_1">Henein 2010</a>)
+
+Author(s)
+: Henein, S.
+
+Year
+: 2010
+
+## References
+
+<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>Henein, Simon. 2010. “Flexures: Simply Subtle.” In <i>Diamond Light Source Proceedings, Medsi 2010</i>. Cambridge University Press.</div>
+</div>
diff --git a/content/zettels/flexible_joints.md b/content/zettels/flexible_joints.md
index 2cec888..1e27b31 100644
--- a/content/zettels/flexible_joints.md
+++ b/content/zettels/flexible_joints.md
@@ -12,12 +12,17 @@ Tags
 
 Books:
 
--   (<a href="#citeproc_bib_item_4">Lobontiu 2002</a>)
+-   (<a href="#citeproc_bib_item_6">Smith 2000</a>)
+-   (<a href="#citeproc_bib_item_5">Lobontiu 2002</a>)
 -   (<a href="#citeproc_bib_item_3">Henein 2003</a>)
--   (<a href="#citeproc_bib_item_6">Smith 2005</a>)
--   (<a href="#citeproc_bib_item_7">Soemers 2011</a>)
+-   (<a href="#citeproc_bib_item_7">Smith 2005</a>)
+-   (<a href="#citeproc_bib_item_8">Soemers 2011</a>)
 -   (<a href="#citeproc_bib_item_2">Cosandier 2017</a>)
 
+Presentations:
+
+-   (<a href="#citeproc_bib_item_4">Henein 2010</a>)
+
 
 ## Flexure Joints for Stewart Platforms: {#flexure-joints-for-stewart-platforms}
 
@@ -30,20 +35,18 @@ From (<a href="#citeproc_bib_item_1">Chen and McInroy 2000</a>):
 
 ## Materials {#materials}
 
--   (<a href="#citeproc_bib_item_5">Smith 2000</a>)
--   (<a href="#citeproc_bib_item_4">Lobontiu 2002</a>)
--   (<a href="#citeproc_bib_item_3">Henein 2003</a>)
--   (<a href="#citeproc_bib_item_2">Cosandier 2017</a>)
-
 
 ## Bibliography {#bibliography}
 
+## References
+
 <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>Chen, Yixin, and J.E. McInroy. 2000. “Identification and Decoupling Control of Flexure Jointed Hexapods.” In <i>Proceedings 2000 Icra. Millennium Conference. Ieee International Conference on Robotics and Automation. Symposia Proceedings (Cat. No.00ch37065)</i>, nil. doi:<a href="https://doi.org/10.1109/robot.2000.844878">10.1109/robot.2000.844878</a>.</div>
   <div class="csl-entry"><a id="citeproc_bib_item_2"></a>Cosandier, Florent. 2017. <i>Flexure Mechanism Design</i>. Boca Raton, FL Lausanne, Switzerland: Distributed by CRC Press, 2017EOFL Press.</div>
   <div class="csl-entry"><a id="citeproc_bib_item_3"></a>Henein, Simon. 2003. <i>Conception Des Guidages Flexibles</i>. Lausanne, Suisse: Presses polytechniques et universitaires romandes.</div>
-  <div class="csl-entry"><a id="citeproc_bib_item_4"></a>Lobontiu, Nicolae. 2002. <i>Compliant Mechanisms: Design of Flexure Hinges</i>. CRC press.</div>
-  <div class="csl-entry"><a id="citeproc_bib_item_5"></a>Smith, Stuart T. 2000. <i>Flexures: Elements of Elastic Mechanisms</i>. Crc Press.</div>
-  <div class="csl-entry"><a id="citeproc_bib_item_6"></a>———. 2005. <i>Foundations of Ultra-Precision Mechanism Design</i>. Vol. 2. CRC Press.</div>
-  <div class="csl-entry"><a id="citeproc_bib_item_7"></a>Soemers, Herman. 2011. <i>Design Principles for Precision Mechanisms</i>. T-Pointprint.</div>
+  <div class="csl-entry"><a id="citeproc_bib_item_4"></a>———. 2010. “Flexures: Simply Subtle.” In <i>Diamond Light Source Proceedings, Medsi 2010</i>. Cambridge University Press.</div>
+  <div class="csl-entry"><a id="citeproc_bib_item_5"></a>Lobontiu, Nicolae. 2002. <i>Compliant Mechanisms: Design of Flexure Hinges</i>. CRC press.</div>
+  <div class="csl-entry"><a id="citeproc_bib_item_6"></a>Smith, Stuart T. 2000. <i>Flexures: Elements of Elastic Mechanisms</i>. Crc Press.</div>
+  <div class="csl-entry"><a id="citeproc_bib_item_7"></a>———. 2005. <i>Foundations of Ultra-Precision Mechanism Design</i>. Vol. 2. CRC Press.</div>
+  <div class="csl-entry"><a id="citeproc_bib_item_8"></a>Soemers, Herman. 2011. <i>Design Principles for Precision Mechanisms</i>. T-Pointprint.</div>
 </div>
diff --git a/content/zettels/passive_damping.md b/content/zettels/passive_damping.md
index b6029b0..293035e 100644
--- a/content/zettels/passive_damping.md
+++ b/content/zettels/passive_damping.md
@@ -8,6 +8,12 @@ Tags
 :
 
 
+## Viscoelastic materials {#viscoelastic-materials}
+
+
+## [Tuned Mass Damper]({{< relref "tuned_mass_damper.md" >}}) {#tuned-mass-damper--tuned-mass-damper-dot-md}
+
+
 ## Bibliography {#bibliography}
 
 ## References
diff --git a/content/zettels/tuned_mass_damper.md b/content/zettels/tuned_mass_damper.md
index 75a3897..7132490 100644
--- a/content/zettels/tuned_mass_damper.md
+++ b/content/zettels/tuned_mass_damper.md
@@ -118,6 +118,14 @@ This relation can help to determine the minimum mass of the TMD that will give a
 
 <https://vibratec.se/en/product/high-frequency-tuned-mass-damper/>
 
+
+## Ways to add damping {#ways-to-add-damping}
+
+Possible damping sources:
+
+-   magnetic (eddy current)
+-   viscous
+
 ## References
 
 <style>.csl-entry{text-indent: -1.5em; margin-left: 1.5em;}</style><div class="csl-bib-body">