Pommereau, J. P., & Goutail, F. (1988). O3 and NO2 ground-based measurements by visible spectrometry during Arctic winter and spring 1988. Geophysical Research Letters, 15(8), 891-894. https://doi.org/10.1029/gl015i008p00891
Pommereau, J. P., & Goutail, F. (1988). Stratospheric O3 and NO2 observations at the southern polar circle in summer and fall 1988. Geophysical Research Letters, 15(8), 895-897. https://doi.org/10.1029/gl015i008p00895