Closest I know of ... http://www.users.globalnet.co.uk/~mfogg/zubrin.htm http://www.users.globalnet.co.uk/~mfogg/zubrin.htm I believe Zubrin expands on it a b

Closest I know of ... http://www.users.globalnet.co.uk/~mfogg/zubrin.htm http://www.users.globalnet.co.uk/~mfogg/zubrin.htm I believe Zubrin expands on it a bit in his book ... http://www.amazon.com/The-Case-Mars-Settle-Planet/dp/0684835509 http://www.amazon.com/The-Case-Mars-Settle-Planet/dp/0684835...