M. Maeda, Y. Oki, and T. Koga, "Detection of inflammable gas in the atmosphere by new type of photo-acoustic Raman spectroscopy,"
in Conference on Lasers and Electro-Optics, J. Bowers, D. Miller, D. Scifres, and A. Weiner, eds.,
Vol. 9 of OSA Technical Digest
(Optical Society of America, 1996), paper CTuF3.