1. American Society for Testing and Materials (ASTM), 2003. Standard Test Method for Slump of Hydraulic-Cement Concrete: ASTM C143/C 143M-00.
2. Bezuijen, A., 2011. Foam used during EPB tunnelling in saturated sand, description of mechanisms. In: Proceedings of the ITA-AITES World Tunnel Congress in Helsinki.
3. Bezuijen, A., 2013. Foam parameters in saturated sand, theory and model tests. In: Proceedings of the ITA-AITES World Tunnel Congress in Geneva.
4. Bezuijen, A., Talmon, A.M., 2014. Soil pressures on both sides of the cutter wheel of an EPB-shield. In: Proceedings of the ITA-AITES World Tunnel Congress in Foz do Iguaçu.
5. Simulation of the EPB-shield TBM in model tests with foam as additive;Bezuijen;Proc. Cong. Modern Tunn. Sci. Technol.,2001