Gruzdev Aleksandr N., and Mokhov Igor I. “Analysis of Satellite Measurements of Ozone, Nitrous Oxide and Methane: Intra-Annual Variations in the Stratosphere”. Polar Research 13, no. 1 (January 6, 1994): 13-22. Accessed July 19, 2024. https://polarresearch.net/index.php/polar/article/view/1962.