1. The placement of the feathers
2. The way of life recorded in the rock art of Valcamonica;Anati E.;Adoranten,2008
3. Der Depotfund von Stollhof;Angeli W.;Annalen des Naturhistorischen Museums in Wien,1966
4. Two Italian halberds and the question of the earliest European halberds;Barfield L.H.;Origini,1969