Towards a Generalized Map Algebra: Principles and Data Types. - Gilberto Câmara; Danilo Palomo; Ricardo Cartaxo Modesto de Souza; Olga Regina Fradico de Oliveira (GEOINFO, 2005)

TerraHS: Integration of Functional Programming and Spatial Databases for GIS Application Development. - Sérgio Souza Costa; Gilberto Câmara; Danilo Palomo (GEOINFO, 2006)