Dynamics of two satellites in the 2/1 Mean–Motion resonance: application to the case of Enceladus and Dione N. Callegari Jr.T. Yokoyama Original Article 05 April 2007 Pages: 5 - 30
Approximate analysis for relative motion of satellite formation flying in elliptical orbits Fanghua JiangJunfeng LiHexi Baoyin Original Article 06 April 2007 Pages: 31 - 66
General solution of the Kozai mechanism Hiroshi KinoshitaHiroshi Nakai Original Article Open access 05 April 2007 Pages: 67 - 74