CoreSec: an ontology of security aplied to the business process of management. - Ryan Ribeiro de Azevedo; Fred Freitas; Silas Cardoso de Almeida; Marcelo José S. C. Almeida; Edson C. de Barros C. Filho; Wendell Campos Veras (EATIS, 2008)

A proposal for an educational system service to support teaching/learning process for logic programming. - Eric Rommel Dantas Galvão; Ryan Ribeiro de Azevedo; Cleyton M. O. Rodrigues; Silas Cardoso de Almeida; Fred Freitas; Vinicius Cardoso Garcia (CSEE&T, 2011)

Translating Natural Language into Ontology. - Ryan Ribeiro de Azevedo; Fred Freitas; Rodrigo G. C. Rocha; Daniel S. Figueredo; Silas Cardoso de Almeida; Gabriel de França Pereira e Silva (SBBD (Short Papers), 2013)