S. Janz and J. A. Bardwell, "Characterization of anodic oxide growth kinetics on (100) Si by surface second-harmonic generation,"
in Quantum Electronics and Laser Science Conference, J. Bokor, R. Slusher, P. Bucksbaum, and R. Falcone, eds.,
Vol. 12 of OSA Technical Digest
(Optical Society of America, 1997), paper QWC4.