Moreira Pereira, Emmanuel, Alcides Almeida Ferreira, Valdeci Andrade Dantas, Luci Cleide Farias Soares Sousa, and Almair Albuquerque Fernandes. 2011. “EVALUATION OF PRODUCTION OF CACTUS PERA (Opuntia Ficus - Indica Mill) IN THE DENSITY PRODUCTION SYSTEM”. Revista Verde De Agroecologia E Desenvolvimento Sustentável 6 (4):07-10. https://www.gvaa.com.br/revista/index.php/RVADS/article/view/923.