Observations of Three Stellar Occultations by Comet Hale–Bopp A. S. BetzlerL. B. S. Betzler OriginalPaper 13 March 2017 Pages: 1 - 14
About Tidal Evolution of Quasi-Periodic Orbits of Satellites Sergey V. Ershkov OriginalPaper 11 May 2017 Pages: 15 - 30
Coverage of Mars by Probes Slightly Off the Areostationary Orbit Elena ColellaEmiliano OrtoreEnnio Condoleo BriefCommunication 18 March 2017 Pages: 31 - 39
