Schmidt, W., Tchetgnia Ngassam, I. L., Olonade, K. A., Mbugua, R. N. and Kühne, H.-C. (2019) “Plant based chemical admixtures – potentials and effects on the performance of cementitious materials”, RILEM Technical Letters, 3, pp. 124–128. doi: 10.21809/rilemtechlett.2018.83.