Edwin Orsel
- Sixteenth-century development from common rafter roofs to ridge purlins in Leiden (NL). Presented at: 6th International Congress on Construction History (6ICCH 2018), July 9-13, 2018, Brussels, Belgium. (2018):
- Brickwork in Leiden. A Survey of Sixteenth and Seventeenth-Century Characteristics. Presented at: Second International Congress on Construction History, Queens' College, Cambridge University; 29/03-02/04/2006. (2006):