More online references for the IIE
http://gltrs.grc.nasa.gov/cgi-bin/GLTRS/browse.pl?2005/CR-2005-214017.html
http://www.esa.int/gsp/ACT/doc/ACT-PRE-4200-InnSys-McNutt.pdf
http://astronauticsnow.com/mg_pubs/gruntman_et_al_p_29-34_iaa_aosta_2005.pdf
http://astronauticsnow.com/MikeGruntman/mg_p_lst.html
http://www.space.com/businesstechnology/050706_star_voyage.html
http://www.lpi.usra.edu/opag/mcnuttstaif06.pdf
