1. Solar constant, sun-spots, and solar activity;Ångström;Astrophys. J.,1922
2. Dolgosrochnye prognozy pogody i kolebanii klimata Kazakhstana (Long-term Forecasts of the Weather and of the Climatic Fluctuations of Kazakhstan);Baidal,1964
3. Vopros ob izmenenii klimata v istoricheskuiu epokhu;Berg,1911-1947
4. Vopros ob izmenenii klimata v istoricheskuiu epokhu;Berg,1911-1958