Krauskopf, C. and Purton, P. 2020. From Tower to the Bastion: Changes in Fortress Design to Accommodate Gunpowder Artillery (14th to 16th Centuries). Fasciculi Archaeologiae Historicae. 33, (Dec. 2020), 89–101. DOI:https://doi.org/10.23858/FAH33.2020.006.