Julio Leite. 1989.
 O Uso de Pontos de Vista na Elicitação de Requisitos. In <em>Proceedings of the 3rd Brazilian Symposium on Software Engineering</em>, October 25, 1989, Recife/PE, Brasil. SBC, Porto Alegre, Brasil, 71-85. DOI: <a href="https://doi.org/10.5753/sbes.1989.25251">https://doi.org/10.5753/sbes.1989.25251</a>.