diff --git a/publikationsliste/publikationen_vakuum_PTB.bib b/publikationsliste/publikationen_vakuum_PTB.bib
index aec37d6c29abd9b8f9e5ced683b15cc89012d7e9..963b06e3c145f3f35ffd27ce64b8657497a403bf 100644
--- a/publikationsliste/publikationen_vakuum_PTB.bib
+++ b/publikationsliste/publikationen_vakuum_PTB.bib
@@ -2569,3 +2569,63 @@
   isbn         = {978-1-4612-9036-0},
   langid       = {english}
 }
+@INBOOK{Jitschin:1988h,
+  author       = {Jitschin, Wolfgang},
+  title        = {Inner-Shell Vacancy Creation},
+  subtitle     = {Perturbative Approximations and Beyond},
+  pages        = {171-228},
+  chapter      = {6},
+  booktitle    = {Coherence in atomic collision physics},
+  booksubtitle = {For Hans Kleinpoppen on His Sixtieth Birthday},
+  editor       = {Beyer, H. J. and Blum, K. and Hippler, R.},
+  date         = {1988},
+  publisher    = {Springer},
+  location     = {New York},
+  doi          = {10.1007/978-1-4757-9745-9_6},
+  isbn         = {978-1-4757-9747-3},
+  langid       = {english}
+}
+@ARTICLE{Jitschin:1987h,
+  author       = {Werner, U. and Jitschin, W.},
+  title        = {RADIATIVE, AUGER, AND COSTER-KRONIG YIELDS OBTAINED BY THE
+    SYNCHROTON PHOTOIONIZATION TECHNIQUE},
+  journaltitle = {Journal de Physique: Colloque},
+  date         = {1987},
+  note         = {14th International Conference on X-Ray and Inner Shell
+    Processes, Paris, 14--18, September, 1987, France},  
+  pages        = {559-562},
+  issue        = {C9},
+  volume       = {48},
+  doi          = {10.1051/jphyscol:1987994},
+  issn         = {0449-1947},
+  langid       = {english}
+}
+@ARTICLE{Jousten:2019d,
+  author       = {Jousten, Karl and Eichler, Thomas and Heitmann, Felix and
+    Juling, Markus and Kühn, Markus and Rose, Jürgen and Steinbock, Jonas},
+  title        = {Dienstleistung und Forschung für die Wärmemessung in der PTB},
+  journaltitle = PTB_M,
+  issuetitle   = {Metrologie im Fluss. Durchflussmessungen},
+  date         = {2019},
+  volume       = {129},
+  number       = {1},
+  pages        = {13-21},
+  issn         = {0030-834X},
+  doi          = {10.7795/310.20190199},
+  langid       = {ngerman}
+}
+@INPROCEEDINGS{Hashad:2020,
+  author       = {Hashad, Ahmed and Sabuga, Wladimir and Ehlers, Sven and
+    Bock, Thomas},
+  title        = {Experimental evaluation of a PTB force-balanced piston gauge},
+  booktitle    = {Proceedings of the APMF 2019},
+  booksubtitle = {Asia Pacific Measurement Forum on Mechanical Quantities 2019,
+    Niigata, 17-21, November, 2019, Japan},
+  publisher    = {The Society of Instrument and Control Engineers (SICE)},
+  date         = {2020},  
+  langid       = {english}
+}
+
+
+
+
diff --git a/publikationsliste/publikationen_vakuum_PTB.pdf b/publikationsliste/publikationen_vakuum_PTB.pdf
index 0b3294aa3bda927c55d8cb3c085035c7c137f7cd..3988b05fc9e14b6dc8bc3e4dc7d834a9cd82b70f 100644
Binary files a/publikationsliste/publikationen_vakuum_PTB.pdf and b/publikationsliste/publikationen_vakuum_PTB.pdf differ