BILL, Ralf. Ehlers, M., Schiewe, J. (2012): Geoinformatik. Raumforschung und Raumordnung | Spatial Research and Planning, DE, v. 70, n. 6, p. 557–559, 2012. DOI: 10.1007/s13147-012-0183-x. Disponível em: https://rur.oekom.de/index.php/rur/article/view/766.. Acesso em: 2 may. 2024.