[1]
Massazza, F. and Francardi, M.T. 1971. Quick determination of free lime: modification of the Franke and Schlaepfer- Bukowski methods. Materiales de Construcción. 21, 141 (Mar. 1971), 29–36. DOI:https://doi.org/10.3989/mc.1971.v21.i141.1516.