[2] Karsilayan H. Quantitation of vitamin B by first-derivative absorption spectroscopy [J]. Spectrochimica Acta Part A, 1996, 52(9): 1163-1168.
[8] Fesquet J, Girault B, Razafindrandriatsimaniry M D M. Determination of absorption coefficients of thick semiconductor samples using photoacoustic spectroscopy [J]. Appl. Opt., 1984, 23(16): 2784-2787.