1. Upper Cretaceous-Paleocene magnetic stratigraphy at Gubbio, Italy, V. Type section for the Late Cretaceous-Paleocene geomagnetic reversal time scale;Alvarez;Geological Society of America Bulletin,1977
2. The Scaglia limestones (Late Cretaceous-Oligocene) in the north-eastern Apennines carbonate sequence: stratigraphic context and geological significance;Alvarez,1988
3. Sedimentology of Gubbio sequence and its bearing on paleomagnetism;Arthur;Memorie della Società Geologica Italiana,1976
4. Upper Cretaceous-Paleocene magnetic stratigraphy at Gubbio, Italy, I. Lithostratigraphy and sedimentology;Arthur;Geological Society of America Bulletin,1977
5. Development of widespread organic carbon-rich strata in the Mediterranean Tethys;Arthur,1982