Physical and chemical characteristics of lettuce cultivars grown under three production systems . Bioscience Journal [online], 2017. [online], vol. 33, no. 3, pp. 621–630. [Accessed14 December 2025]. DOI 10.14393/BJ-v33n3-36546. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/36546.