Sousa Filho, Gilberto, Dorgival Pereira da S. Netto, Lettiery D’Lamare P. Procopio, Andrei A. Formiga, and Alisson V. Brito.
" Hypermedia tutor based on NCM authoring model for Graphic Data Structure Interpreter." <em>Proceedings of the 20th Workshop on Computing Education,
Curitiba/PR, 2012</em>. SBC, 2012,  
pp.190-199.