The character of Cardinal Bellarmine, online information;

http://galileo.rice.edu/chr/bellarmine.html
http://en.wikipedia.org/wiki/Robert_Bellarmine
http://www.newadvent.org/cathen/02411d.htm
http://law2.umkc.edu/faculty/projects/ftrials/galileo/keyfigures.html#Bellarmine
Primary Document Translations:
http://www.fordham.edu/halsall/mod/1615bellarmine-letter.asp
http://www.creationism.org/csshs/v11n3p18.htm
http://law2.umkc.edu/faculty/projects/ftrials/galileo/bellarminestatement.html