http://www.urwallpapers.com/blue-background/   : background
http://brlcad.org/wiki/Google_Summer_of_Code/Project_Ideas : LOGO
https://www.linkedin.com/pulse/top-10-tips-high-quality-mesh-finite-element-analysis-kuusisto-p-e- : car
https://sourceforge.net/projects/brlcad/ : rendered tank image
https://www.tomsguide.com/us/pictures-story/488-paid-software-for-free.html : tank image