1. Castle Museum in Malbork, Arms and Armour Collection – Cannon Barrel, MZM/468/MT (inventory card)
2. Zeugbuch (c. 1502) Zeugbuch Kaiser Maximilians I. Innsbruck. Bayerische Staatsbibliothek München, Cod. Icon. 222
3. Blakelock E, Martinón-Torres M, Veldhuijzen HA, Young T (2009) Slag inclusions in iron objects and the quest for provenance: an experiment and a case study. J Archaeol Sci 36:1245–1757. https://doi.org/10.1016/j.jas.2009.03.032
4. Buchwald VF (2005) Iron and steel in ancient times. Historisk-filosofiske Skrifter 29. The Royal Danish Academy of Sciences and Letters, Copenhagen
5. Buchwald VF (2008) Iron, steel and cast iron before Bessemer. Historisk-filosofiske Skrifter 32. The Royal Danish Academy of Sciences and Letters, Copenhagen