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Kumar, M. Pradeep; Mini, K.M.; Rangarajan, Murali . (2018). Ultrafine GGBS and calcium nitrate as concrete admixtures for improved mechanical properties and corrosion resistance. Construction and Building Materials, 182(), 249–257. doi:10.1016/j.conbuildmat.2018.06.096 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research