J. Wormhoudt, T. A. Berkoff, and R. C. Miake-Lye, "Measurement of SO(sub)2 and SO(sub)3 in aircraft engine exhausts using a tunable diode laser system,"
in Laser Applications to Chemical and Environmental Analysis, T. Li, ed.,
Vol. 36 of OSA Trends in Optics and Photonics Series
(Optical Society of America, 2000), paper SuA2.