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Eich, H. T.; Diehl, V.; Gorgen, H.; Pabst, T.; Markova, J.; Debus, J.; Ho, A.; Dorken, B.; Rank, A.; Grosu, A.-L.; Wiegel, T.; Karstens, J. H.; Greil, R.; Willich, N.; Schmidberger, H.; Dohner, H.; Borchmann, P.; Muller-Hermelink, H.-K.; Muller, R.-P.; Engert, A. . (2010). Intensified Chemotherapy and Dose-Reduced Involved-Field Radiotherapy in Patients With Early Unfavorable Hodgkin's Lymphoma: Final Analysis of the German Hodgkin Study Group HD11 Trial. Journal of Clinical Oncology, 28(27), 4199–4206. doi:10.1200/JCO.2010.29.8018 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research