The eleventh motion constant of the two-body problem Andrew J. SinclairJohn E. Hurtado Original Article 15 May 2011 Pages: 189 - 198
Displaced non-Keplerian orbits using impulsive thrust Colin R. McInnes Original Article 15 May 2011 Pages: 199 - 215
Global bifurcation of planar and spatial periodic solutions in the restricted n-body problem C. García-AzpeitiaJ. Ize Original Article 19 June 2011 Pages: 217 - 237
Asymptotic solution for the two-body problem with constant tangential thrust acceleration Claudio BombardelliGiulio BaùJesus Peláez Original Article 19 June 2011 Pages: 239 - 256
Orbit determination with the two-body integrals. II G. F. GronchiD. FarnocchiaL. Dimare Original article 19 June 2011 Pages: 257 - 270
Existence and stability of symmetric periodic simultaneous binary collision orbits in the planar pairwise symmetric four-body problem Lennard F. BakkerTiancheng OuyangSkyler Simmons Original Article 30 June 2011 Pages: 271 - 290