1. 1Elfes, A., Bueno, S.S., Bergerman, M., Ramos, J.Jr.G. "A Semi-Autonomous Robotic Airship for Environmental MonitoringMissions", Proceedings ofthe Int. Conference onRobotics &Automation, IEEE, 1998, pp.3449-3455.
2. 2Zaugg, D.A., Arnold, D.V., Jensen, M.A. "Ocean Surface and Landside Probing with a Scanning Radar Altimeter", Proceedingsof the Int. Geoscience andRemoteSensingSymposium,IEEE, Vol.1, 2000, pp.120-122.
3. 3Hain, J.H.W. "Lighter-than-air Platforms (Blimps and Aerostats) for Oceanographic and Atmospheric Research and Monitoring", Proceedings oftheOceansMTS Conference andExhibition, IEEE,Vol. 3, 2000, pp.1933-1936.
4. 4Valera, J.L. "Some Remarks on the Conceptual Design of a Heavy Lift Cargo Transporter", Proceedings of the 14thAIAA Lighter-Than-Air Technical Committee Convention &Exhibition, AIAA, Reston, VA, 2001.