RIBEIRO, Douglas G.; KURASHIMA, Celso S.; GUELFI, Adilson E.; ZUFFO, Marcelo K.. Evaluation of theora and speex performance in IP videoconferencing. In: BRAZILIAN SYMPOSIUM ON MULTIMEDIA AND THE WEB (WEBMEDIA), 18. , 2012, São Paulo. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2012 . p. 135-138.