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2. Lange O (1931) The concise course of general hydrogeology (in Russian). Gostechizdat, Moscow-Leningrad
3. Lange O (1933a) The overview of hydrogeological conditions in Uzbekistan (in Russian). Materials on Hydrogeology of Uzbekistan Series, issue 10. Tashkent, Uzbekistan, pp 25–30
4. Lange O (1933b) Materials for groundwater classifications (in Russian). Proceedings of the First Congress of Hydrogeologists, issue 8, Moscow, December 25–31, 1931, pp 69–81
5. Lange O (1936) Deep groundwater in Uzbekistan (in Russian). Materials on Hydrogeology and Engineering Geology in Uzbekistan Series, issue 2, Tashkent, Uzbekistan