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Camapum de Carvalho, José; de Rezende, Lilian R.; Cardoso, Fabricio B. da F.; Lucena, Lêda C. de F.L.; Guimarães, Renato C.; Valencia, Yamile G. . (2015). Tropical soils for highway construction: Peculiarities and considerations. Transportation Geotechnics, 5(), 3–19. doi:10.1016/j.trgeo.2015.10.004 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research