http://en.wikipedia.org/wiki/August_Ferdinand_Mobius
http://www.encyclopedia.com/doc/1G2-3407500199.html
_ Möbius strip - Video Learning - WizScience.com
https://youtu.be/C195u8uip9s
_ Blender: Create and 3D print a Möbius Strip!
https://youtu.be/WBgxYp6usP0