On the trail of Caesar and Vercingetorix: survey in the Bibracte oppidum, Mont Beuvray (France) - Milo, Peter; Goláňová, Petra; Grünseisen, Jiří; Kovár, Branislav; Meunier, Arnaud; Murín, Igor; Tencer, Tomáš; Vágner, Michal; Zeman, Jan (2015)