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Mezzapesa, Francesco P.; Columbo, Lorenzo L.; Rizza, Carlo; Brambilla, Massimo; Ciattoni, Alessandro; Dabbicco, Maurizio; Vitiello, Miriam S.; Scamarcio, Gaetano . (2016). Erratum: Corrigendum: Photo-generated metamaterials induce modulation of CW terahertz quantum cascade lasers. Scientific Reports, 6(1), 18547–. doi:10.1038/srep18547 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research