Lúcia Castro, Fernanda Baião, and Giancarlo Guizzardi. 2009.
Methodology for Conceptual Data Modeling. In Proceedings of the 5th Brazilian Symposium on Information Systems, May 20, 2009, Brasília, Brasil. SBC, Porto Alegre, Brasil, 294-299. DOI: https://doi.org/10.5753/sbsi.2009.6186.