Gustavo Buzai D.: Teacher in Secondary Education, Normal and Special in Geography. Degree in Geography at the Universidad de Buenos Aires. PhD in Geography from the Universidad Nacional de Cuyo. He works at the Universidad Nacional de Luján where is Associate Professor and researcher category I (SPU); Director of the program on teaching and research systems of geographic information (PRODISIG) and the study group on geography and spatial analysis with systems of geographic information; independent researcher from the National Council of Scientific Research and Technology (CONICET).