1. Forum on concepts and approaches for the Jupiter Icy Moons Orbiter;LPI,2003
2. NRC, , A science strategy for the exploration of Europa, Space Studies Board, National Research Council, National Academy Press, Washington D. C., 1999,
3. NRC, , New frontiers in the solar system: An integrated exploration strategy, Space Studies Board, National Research Council, National Academy Press, Washington, D. C., 2003,
4. Solar System Exploration;NASA,2003