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Toriumi, D. M.; Josen, J.; Weinberger, M.; Tardy, M. E. . (1997). Use of Alar Batten Grafts for Correction of Nasal Valve Collapse. Archives of Otolaryngology - Head and Neck Surgery, 123(8), 802–808. doi:10.1001/archotol.1997.01900080034002 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research