http://en.wikipedia.org/wiki/Bernhard_Riemann
http://www-groups.dcs.st-and.ac.uk/~history/Biographies/Riemann.html
_ Music is math
http://www.youtube.com/watch?v=JqJQGShxKo8
_ 数学B1・Riemann積分
http://www.youtube.com/watch?v=tKsmeObACAk
_ Lecture 19 - Applications of Riemann Integral
http://www.youtube.com/watch?v=hNOnzg-TcVs