1. J Calleji. New Techniques in the Study of Setting and Hardening of Hydraulic Materials.ACI Journal, 1952, 48:525–536
2. G Szuk. Use of Special Instruments for Testing Setting Time of Cement Paste, Steam Curing of Concrete as well as Hardening Process of Concrete.RILEM bulletin, Paris, 1962, 16:29–34
3. Z Li, W Li.No-Contacting Method for Resistivity Measurement of Concrete Specimen. US and China Patent in Process, 2001
4. J F Young. A Review of the Mechanism of Set Retardation in Portland Cement Pastes Containing Organic Admixtures.Cement and Concrete Research, 1972, (2):415–433
5. S Suzuki, S Nishi. Effect of Saccharides and Other Organic Compounds on Hydration of Portland Cement.Semento Gijutsu Nempo, 1959, (13):160–170