@article{11311_752618,
author = {TOPPUTO, FRANCESCO and BERNELLI ZAZZERA, FRANCO},
title = {Approximate Solutions to Nonlinear Optimal Control Problems in Astrodynamics},
year = {2013},
doi = {10.1155/2013/950912},
journal = {ISRN AEROSPACE ENGINEERING},
volume = {2013},
pages = {1--7},
}