Brulet, R., Mertens, G., Elsen, J., Brutsaert, A., & Deckers, M. (2007). Quantitative composition of ancient mortars from Tournai and Tongres (Belgium). Proceedings of the Tenth Euroseminar on Microscopy Applied to Building Materials, 1-7. https://hdl.handle.net/2078.5/87281 (Original work published 2007)