Velasquez-Vasconez, P.A. et al. 2021. Can higher CO2 concentrations affect yield and quality parameters in lettuce and sugar beet crops?. Revista Verde de Agroecologia e Desenvolvimento Sustentável. 16, 1 (Jan. 2021), 27–32. DOI:https://doi.org/10.18378/rvads.v16i1.8357.