1. X-ray spectrographic method for determining rare-earths;Aleksiev;Izv. Geol. Inst. Bulgar Akad.,1962
2. Rare-earth elements in peridotites of the Polar Urals;Balashov;Geokhimiya,1962
3. translationin Geochemistry1962, 433–435.
4. Correlation relations of rare-earth elements and some features of the segregation of rare earths during processes of endogenous mineral formation;Borodin;Geokhimiya,1960
5. translationin Geochemistry1960, 604–616.