1. Absolute Gravity measurements in mainland Portugal and the Azores islands in 1992 and 1994;Bastos,1996
2. Direct measurement of absolute sea-surface height from an aircraft;Brozena;Geophysical Research Letters,1993
3. The Greenland Aerogeophyscis Experiment: Airborne Gravity, Topographic and Magnetic Mapping of an entire Continent;Brozena,1992
4. Long Base Real Time Positioning of Airborne Sensors;Cunha,1999
5. Recent crustal dynamics in the Azores archipelago derived from repeated GPS observations;Fernandes,1998