@conference{
11311_663382,
author = {Lavagna, Michèle and Armellin, Roberto and Morselli, Alessandro and Serpelloni, E.},
title = {ASTREA: a Mars Lagrangian Point Base to Serve Asteroids Belt Cycling Missions},
year = {2012},
booktitle = {Proceedings of Global Space Exploration Conference (GLEX 2012)},
pages = {1--14}
}