1. M. Ceriotti, C.R. McInnes, B.L. Diedrich, The pole-sitter mission concept: an overview of recent developments and possible future applications, in: Proceedings of the 62nd International Astronautical Congress (IAC 2011), Cape Town, South Africa, 2011.
2. P.C. Anderson, M. Macdonald, Extension of Earth orbits using low-thrust propulsion, in: Proceedings of the 61st International Astronautical Congress (IAC 2010), Prague, Czech Republic, 2010.
3. P.C. Anderson, M. Macdonald, Extension of the Molniya orbit using low-thrust propulsion, in: Proceedings of the 21st AAS/AIAA Space Flight Mechanics Meeting, AIAA, New Orleans, USA, 2011.
4. C.R. McInnes, P. Mulligan, Final report: telecommunications and Earth observations applications for polar stationary solar sails, National Oceanographic and Atmospheric Administration (NOAA)/University of Glasgow, Department of Aerospace Engineering, 2003.
5. Analysis of an arctic polesitter;Driver;J. Spacecr. Rockets,1980