Here's the pre-print version: http://www.philipmetzger.com/blog/wp-content/uploads/2014/09/Preprint_Affordable-bootstrapping-of-space-industry-and-solar-system-

Here's the pre-print version: http://www.philipmetzger.com/blog/wp-content/uploads/2014/09/Preprint_Affordable-bootstrapping-of-space-industry-and-solar-system-civilization.pdf http://www.philipmetzger.com/blog/wp-content/uploads/2014/09... The final published version is behind paywall/subscription. Lots of other cool papers from the Space 2000 conference :http://cedb.asce.org/cgi/WWWdisplayrbn.cgi?RBN9780784404799 http://cedb.asce.org/cgi/WWWdisplayrbn.cgi?RBN9780784404799