6th Spacecraft Charging Conference
6th Workshop on Solar Magnetic and Velocity Field. Proceedings. Workshop, Taian, Shandong (China), 10 - 17 Aug 1998.
6^Li in the atmosphere of GJ 117
6^Li in the atmosphere of GJ 117 Revisited
6π-periodic solutions of a restricted planar elliptic three-body problem in the vicinity of the libration point L4.