Peeters, R., Berden, G., Olafsson, A., Laarhoven, L. J. J., & Meijer, G. (2001). Cavity enhanced absorption spectroscopy in the 10 mu m region using a waveguide CO2 laser. Chemical Physics Letters, 337, 231-236. https://doi.org/10.1016/s0009-2614(01)00217-2 (Original work published)
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