http://vulcain.fb12.tu-berlin.de/ILR...hh_koelle.html

Koelle's Moonbase 2015 - Model of a Near-Term Lunar Base

Nearly 1,000 metric tons of facilities and equipment are installed on the
Moon. Average crew duty cycles are nine months. A lunar space transportation
system comprised of a heavy lift launch vehicle, a lunar ferry vehicle and a
space operations center in lunar orbit is an essential companion project.
The systems behaviour, the dynamics of selected parameters and the overall
performance and cost-effectiveness of the lunar base, including its logistic
system, are analysed on a year-to-year basis. It is shown that the average
annual cost of a lunar labor-year is expected to be approximately 37 million
(1999) dollars and that the average annual operations cost of this lunar
base including a 10 year development phase may be less than 2 billion $.-
Moonbase 2015 is documented as LUBSIM Option 10 and TRASIM Option 14 in the
authors electronic files.

-kert