Kerstel, E. R. T., R. Q. Iannone, M. Chenevier, S. Kassi, H.-J. Jose, and D. Romanini (2006), A water isotope (H-2, O-17, and O-18) spectrometer based on optical feedback cavity-enhanced absorption for in situ airborne applications, Applied Physics B-Lasers and Optics, 2-3, 397-406.