TY  - BOOK
AU  - Pauline Westerman, Jaap Hage, Stephan Kirste, Anne Ruth Mackor
TI  - Legal Validity and Soft Law
SN  - 9783319775227
PB  - Springer
UR  - https://link.springer.com/openurl?genre=book&isbn=978-3-319-77522-7
ER  -