Arturs Lapins
- Geometry and proportions of the medieval castles of Latvia. Vorgetragen bei: 6th International Congress on Construction History (6ICCH 2018), July 9-13, 2018, Brussels, Belgium. (2018):
- Construction of the Order's Castle in Cesis, Latvia. Vorgetragen bei: Third International Congress on Construction History, Brandenburg University of Technology Cottbus, Germany , 20th-24th May 2009. (2009):