@book{Simma+2020,
url = {https://doi.org/10.3790/9783428427512},
title = {Das Reziprozitätselement im Zustandekommen völkerrechtlicher Verträge},
title = {},
author = {Bruno Simma},
publisher = {Duncker & Humblot},
address = {},
doi = {doi:10.3790/9783428427512},
isbn = {9783428427512},
year = {1972},
lastchecked = {2020}
}