Transfer Calculations
  Hohman Transfer
  Free Return Trajectory
  Spiral
  Summary of Numerical Data

Launch Windows
  Calculations
  Possible Launch Dates
  Graphical Comparison

Sources

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Musser, George and Albert, Mark. How to go to Mars [Internet]. Available from http://www.sciam.com/ 2000/0300issue/0300alpert.html [Accessed December 5, 2000]

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