@ARTICLE{topputo2008analytical,
  author = {Topputo, F. and Owis, A. and Bernelli-Zazzera, F.},
  title = {{Analytical Solution of Optimal Feedback Control for Radially Accelerated Orbits}},
  journal = {Journal of Guidance, Control and Dynamics},
  year = {2008},
  volume = {31},
  pages = {1352--1359},
  number = {5},
  month = {September--October},
  doi = {10.2514/1.33720}
}