1. Abler R, Adams J, Gould P (1971) Spatial organization: the geographer’s view of the world. Prentice-Hall, Englewood Cliffs
2. Câmara G, Egenhofer M, Fonseca F, Monteiro AMV (2001) What’s in an image? In: Spatial information theory: foundations of geographic information science, international conference, COSIT
3. Câmara GM, Monteiro AMV, Paiva JAC, Souza RCM (2000) Action-driven ontologies of the geographical space: beyond the field-object debate. In: Savanah GA (eds) GIScience, AAG, 52–54 Oct 2000
4. Chen KS, Yen SK, Tsay DW (1997) Neural classification of SPOT imagery through integration of intensity and fractal information. Int J Remote Sens 18(4):763–783
5. Curran PJ (1987) Remote sensing methodologies and geography. Int J Remote Sens 8:1255–1275