Richard Etlin
- The "Strength Of Vaults". Presented at: Fifth International Construction History Congress, Chicago, 06/2015. (2015):
- Serial Barrel Vaults, Inverted Arches, and Rings: A Neglected Family of Structural Forms. Presented at: Third International Congress on Construction History, Brandenburg University of Technology Cottbus, Germany , 20th-24th May 2009. (2009):