Avhandlingen besto av et nyskrevet oversiktskapittel, og sju tidligere arbeider: Thesis survey paper Conditions of compatibility of terminal positions and velocities. XIth International Astronautical Congress, Stockholm 1960. Paper 6, pages 40–44. Natural Terminal Velocity Components, Arkiv Astron. Roy. Swedish Acad. of Science, 1967. Variation of natural parameters. Proceedings, 14th International Astronautical Congress (IAC), 25 September–1 October 1963, Paris, France. Simple correctional maneuvres. Presented at the 17th International Astronautical Congress, Madrid, 9–15 October 1966. Method for determining the initial velocity corresponding to a given time of free flight transfer between given points in a simple gravitational field, , Vol. 2, No. 3, 183–186, 1961. The intrinsic equations of optimal two-impulse transfer. Presentert på 21st International Astronautical Congress (IAC), 4–9 October 1970, Constance, Tyskland. (Senere publisert i , vol 18, SUPPL. 3, 233–235, August 1974.) Undisturbed eccentric anomaly difference as the independent variable in the perturbation differential equations. Med T.V. Johansen and E.L. Liipola. , Vol 16, 259–264, 1971.