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2. G. Savu, C. Oprisiu, O. Trifu, An Autonomous Flying Robot for Mars Exploration, IAF-93-R.3.445 Paper, 44th Congress of IAF, 1993, Graz, Austria.
3. G. Savu, O. Trifu, A Photovoltaic Powered, Optimized Aerial Surveyor for Mars, AIAA Paper 95-2644, 31st Joint Propulsion Conference, San Diego, USA, 1995.
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5. G. Savu, A “Jumper” for the Mars surface exploration, The Case for Mars V, The University of Colorado, Boulder, Colorado, U.S.A., May 26–29, 1993, Proceedings (Ed. P.J. Boston), Science and Technology Series, vol. 97, pp. 163–174, 1993.