Central Authority under the Foreign Maintenance Act : receiving and transmitting agency under the United Nations Convention of 1956 Foreign Maintenance : guidelines on how to recover maintenance in relations with foreign states in Germany and abroad / [responsible in editorial terms Oliver Pagenkopf, Jan Kielwein].    Bonn :  Federal Office of Justice,  2011 . 78 s.
https://www.bundesjustizamt.de/EN/SharedDocs/Public/AU/Brochure_Foreign_Maintenance.pdf?__blob=publicationFile&v=2