Neiva, Frâncila, Heleno de Souza Campos Junior, José Maria N. David, Regina Maciel Braga, Marco Antônio Pereira Araújo, Fernanda Claudia Alves Campos, and Rita Suzana Pintangueira Maciel. "Interoperability Requirement to Enhance Collaboration in Software Product Lines: A Systematic Mapping." Anais do XIII Simpósio Brasileiro de Sistemas Colaborativos, Belém, 2016. SBC, 2016, pp.1320-1334.