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Gromachevskaya, E. V.; Fin’ko, A. V.; Butin, A. V.; Pushkareva, K. S.; Strelkov, V. D.; Isakova, L. I.; Krapivin, G. D.. (2013). Substituted 2-Formylbenzoic Acids in the Synthesis of 11H-Isoindolo[2,1-a]Benzimidazol-11-Ones, 5H-Isoindolo[2,1-a][3,1]Benzoxazine-5,11(6aH)-Diones, and 6,6a-Dihydroisoindolo-[2,1-a]Quinazoline-5,11-Diones. Chemistry of Heterocyclic Compounds, 49(9), 1331–1344. doi:10.1007/s10593-013-1382-2 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research