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Lima, Yuri Lopes; Ferreira, Victor Matheus Leite Mascarenhas; de Paula Lima, Pedro Olavo; Bezerra, Márcio Almeida; de Oliveira, Rodrigo Ribeiro; Almeida, Gabriel Peixoto Leão . (2017). The association of ankle dorsiflexion range of motion and dynamic knee valgus: A systematic review and meta-analysis. Physical Therapy in Sport, (), S1466853X16301614–. doi:10.1016/j.ptsp.2017.07.003 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research