Bretas WV, Morais ASC, Hora HRM da, Azevedo Filho ET. Knowledge extraction on international markets from patent bases: a study on green patents. BJO&PM [Internet]. 2019 Dec. 8 [cited 2025 May 30];16(4):698-705. Available from: https://www.bjopm.org.br/bjopm/article/view/767