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Weng, T.; Vukina, T.; Zheng, X. . (2015). Productivity or Demand: Determinants of Plant Survival and Ownership Change in the U.S. Poultry Industry. Applied Economic Perspectives and Policy, 37(1), 151–175. doi:10.1093/aepp/ppu024 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research