diff --git a/publikationsliste/publikationen_vakuum_PTB.bib b/publikationsliste/publikationen_vakuum_PTB.bib
index bd2777bc91df439925c87254e09b6ace12512698..bc695a6d2c8449414497bb8f8a424c7dd93deb91 100644
--- a/publikationsliste/publikationen_vakuum_PTB.bib
+++ b/publikationsliste/publikationen_vakuum_PTB.bib
@@ -2805,6 +2805,31 @@
   type         = {phdthesis},
   langid       = {ngerman}
 }
+@THESIS{Treitz:1974,
+  author       = {Treitz, Norbert},
+  title        = {Untersuchungen am System W(100)-O$_2$ mit SIMS und EID},
+  pagetotal    = {64},
+  institution  = {Universität Köln},
+  date         = {1974},
+  type         = {phdthesis},
+  langid       = {ngerman}
+}
+@INPROCEEDINGS{Jousten:2007e,
+  author       = {Jousten, Karl},
+  title        = {Traceability To SI Units For Vacuum Measurement In Industrial 
+    Applications},
+  booktitle    = {3rd IMEKO TC16 International Conference on Pressure 
+    Measurement 2007},
+  booksubtitle = {Merida, Mexico 27 November – 1 December 2007},
+  date         = {2007},
+  publisher    = {IMEKO},
+  url          = {https://www.imeko.org/publications/tc16-2007/IMEKO-TC16-2007-KL-033u.pdf},
+  date         = {2007},  
+  langid       = {english}
+} 
+
+
 
+    
 
 
diff --git a/publikationsliste/publikationen_vakuum_PTB.pdf b/publikationsliste/publikationen_vakuum_PTB.pdf
index fe20ed57040f4767817dba7aa46f70ead2aaa321..083707b20e42df6201c76c385b9244926c509dbf 100644
Binary files a/publikationsliste/publikationen_vakuum_PTB.pdf and b/publikationsliste/publikationen_vakuum_PTB.pdf differ