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Mandal, Saikat; Gole, Anand; Lala, Neeta; Gonnade, Rajesh; Ganvir, Vivek; Sastry, Murali . (2001). Studies on the Reversible Aggregation of Cysteine-Capped Colloidal Silver Particles Interconnected via Hydrogen Bonds. Langmuir, 17(20), 6262–6268. doi:10.1021/la010536d 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research