@article{
11311_752618,
author = {Topputo, Francesco and BERNELLI ZAZZERA, Franco},
title = {Approximate Solutions to Nonlinear Optimal Control Problems in Astrodynamics},
year = {2013},
journal = {ISRN AEROSPACE ENGINEERING},
volume = {2013},
url = {http://dx.doi.org/10.1155/2013/950912},
doi = {10.1155/2013/950912},
pages = {1--7}
}