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