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Alvareda, Elena; Denis, Pablo A.; Iribarne, Federico; Paulino, Margot . (2016). Bond dissociation energies and enthalpies of formation of flavonoids: A G4 and M06-2X investigation. Computational and Theoretical Chemistry, 1091(), 18–23. doi:10.1016/j.comptc.2016.06.021 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research