@conference{
11311_576673,
author = {Mingotti, G. and Topputo, Francesco},
title = {Ways to the Moon: a Survey},
year = {2011},
publisher = {Univelt},
address = {San Diego},
booktitle = {Spaceflight Mechanics 2011},
isbn = {9780877035695},
pages = {2531--2547}
}