@bookPart{Giegerich_2018,
title={Article 63 : Severance of diplomatic or consular relations},
author={Giegerich, Thomas},
editor={Dörr, Oliver and Schmalenbach, Kirsten},
isbn={978-3-662-55160-8},
doi={http://dx.doi.org/10.22028/D291-30837},
adress={Berlin},
pages={1183-1199},
publisher={Springer},
booktitle={Vienna Convention on the Law of Treaties : a commentary},
year={2018}
}