Z
A > B > C > D > E > F > G > H > I > J > K > L > M > N > O
> P > Q > R > S > T > U > V > W > X > Y > Z -
Zeghbroeck, Bart J. Van (1998). "Energy levels". Shippensburg University.http://physics.ship.edu/~mrc/pfs/308/semicon_book/eband2.htm. Retrieved on 2007-12-23.