Basili Roberto et al., Paleo-Landsurfaces and Tectonics in the Upper Aterno Valley (Central Apennines), Zeitschrift fur Geomorphologie. Supplementband Zeitschrift fur Geomorphologie. Supplement;Zeitschrift fur Geomorphologie. Supplementary issue Annals of geomorphology. Supplement;Annales de geomorphologie. Supplement, 118, 1999, pp. 17-25