@conference{
11311_899172,
author = {Zhang, H. and Topputo, Francesco and Zhang, R. and Zhang, C. and Han, C.},
title = {A Modified Upe Method to Design Two-Impulse Earth-Moon Transfers in a Four-Body Model},
year = {2015},
publisher = {Univelt},
address = {San Diego, CA},
booktitle = {Spaceflight Mechanics 2015},
isbn = {9780877036241},
pages = {2377--2392}
}