Galvão, Anísia Karla de Lima, et al. “Environmental Management and Competitiveness: A Survey on Environmental Awareness in Shrimp Producers in the State of Rio Grande Do Norte in Brazil”. Brazilian Journal of Operations & Production Management, vol. 2, no. 2, Feb. 2010, pp. 75-86, https://bjopm.org.br/bjopm/article/view/BJV2N2_2005_P5.