https://www.routledge.com/Theory-and-Practice-of-Paradiplomacy-Subnational-Governments-in-International/Kuznetsov/p/book/978041573888
https://www.routledge.com/Theory-and-Practice-of-Paradiplomacy-Subnational-Governments-in-International/Kuznetsov/p/book/978041573888