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Subhashini, N. J. P.; Bhadraiah, B.; Janaki, P. . (2017). Synthesis and biological evaluation of 1,3,4-oxadiazole fused pyridine derivatives as antibacterial and antifungal agents. Russian Journal of General Chemistry, 87(3), 550–553. doi:10.1134/S1070363217030276 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research