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Bugris, V.; Dudás, Cs.; Kutus, B.; Harmat, V.; Csankó, K.; Brockhauser, S.; Pálinkó, I.; Turner, Peter; Sipos, P. . (2018). Crystal and solution structures of calcium complexes relevant to problematic waste disposal: calcium gluconate and calcium isosaccharinate. Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, 74(6), 598–609. doi:10.1107/S2052520618013720 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research