Kozievitch, N.P., Almeida, J., Torres, R. da S., Leite, N.A., Gonçalves, M.A., Murthy, U. and Fox, E.A. 2011. Towards a Formal Theory for Complex Objects and Content-Based Image Retrieval. Journal of Information and Data Management. 2, 3 (Oct. 2011), 321. DOI:https://doi.org/10.5753/jidm.2011.1412.