4Stutz J, Platt U. Numerical analysis and estimation of the statistical error of differential optical absorption spectroscopy measurements with least-square method~ J]. Applied Optics,1996,35,6041 - 6053.
5Plane J M, Nien C. Differential optical absorption spectrometer for measuring atmospheric trace gases [J]. Rev Sci Instrum, 1992,63(3), 1867.