1. The relationship between temperature changes and the ozone in the middle stratosphere;Bojkov;Hydrol. Meteorol., Sofia,1963
2. About the variation of total ozone over limited meridional cross-section;Bojkov;Bull. Geophys. Inst. Bulg. Acad. Sci.,1964
3. Bojkov , R. D. Variations of the total ozone and their relationships with some meteorological elements over the Mediterranean 1964
4. The variations of the total ozone and their correlation with the stratospheric temperature;Bojkov;Geomagnet. Aeron., Moscow,1964
5. Vertical ozone distribution in the earth's atmosphere;Bojkov;Meteorol. Gydrol.,1965