Jane Huffman Hayes Inies C. M. Raphael Elizabeth Ashlee Holbrook David M. Pruett A Case History of International Space Station Requirement Faul. 17-26 2006 conf/iceccs/2006 ICECCS http://doi.ieeecomputersociety.org/10.1109/ICECCS.2006.77 db/conf/iceccs/iceccs2006.html#HayesRHP06