@ARTICLE{owis2009radially
  author = {Owis, A. and Topputo, F. and Bernelli-Zazzera, F},
  title = {{Radially Accelerated Optimal Feedback Orbits in Central Gravity Field with Linear Drag}},
  journal = {Celestial Mechanics and Dynamical Astronomy},
  year = {2009},
  volume = {103},
  pages = {1--16},
  number = {1},
  month = {January},
  doi = {10.1007/s10569-008-9161-6}
}