Drauschke, Jörg (2010). "The Search for Central Places in the Merovingian Kingdom". Trade and Communication Networks of the First Millennium AD in the Northern Part of Central Europe: Central Places, Beach Markets, Landing Places and Trading Centres: 31.
Drauschke, Jörg (2010). "The Search for Central Places in the Merovingian Kingdom". Trade and Communication Networks of the First Millennium AD in the Northern Part of Central Europe: Central Places, Beach Markets, Landing Places and Trading Centres: 28–30.