CIRQUEIRA , Douglas ; VINÍCIUS , Lucas ; PINHEIRO , Márcia ; JACOB JUNIOR , Antônio ; LOBATO , Fábio ; SANTANA, Ádamo. Opinion Label: A Gamified Crowdsourcing System for Sentiment. In: WORKSHOP ON TOOLS AND APPLICATIONS - BRAZILIAN SYMPOSIUM ON MULTIMEDIA AND THE WEB (WEBMEDIA) , 2017, Gramado. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2017 . p. 209-213. ISSN 2596-1683.