1. Davidovits, J. (1991). Geopolymers: Inorganic geopolymeric new materials. Journal of Thermal Analysis, 37, 1633–1656.
2. Davidovits, J. (1994). High—Alkali cements for 21st century concretes in concrete technology, past, present and future. In P. Kumar Metha (Ed.), Proceedings of V. Mohan Malhotra Symoposium (pp. 383–397). ACI SP-144.
3. Hardjito, D., & Rangan, B. V. (2005). Development and properties of Low calcium fly ash-based geoploymer concrete research report. Perth: GCI Faculty of Engineering Curtin University of Technology.
4. Malhotra, V. M. (2002). High-performance high-volume fly concrete. Concrete International 24(7), 30–34.
5. Standard Specification for Pre-tensioned Prestressed Concrete Sleepers for Broad Gauge and Metre Gauge, Serial No. T – 39. (2016). Research Designs and Standards Organisation, Lucknow.