Christian Keidel, Alexander Engelhard / July 2015
LawInSport.com 2015, http://www.lawinsport.com/articles/item/football-club-ownership-in-germany-less-romantic-than-you-might-think
LawInSport.com 2015, http://www.lawinsport.com/articles/item/football-club-ownership-in-germany-less-romantic-than-you-might-think