Fábio Barreto, Raphael S. de Abreu, Eyre Brasil B. Montevecchi, Marina Ivanov Pereiraé Josué, Pedro Alves Valentim, and Débora C. Muchaluat Muchaluat-Saade. 2020.
 Extending Ginga-NCL to Specify Multimodal Interactions With Multiple Users. In <em>Proceedings of the 26th Brazilian Symposium on Multimedia and the Web</em>, novembro 30, 2020, Evento Online, Brasil. SBC, Porto Alegre, Brasil, 212-219.