1. Evolution of rare-earth composition and content in the intrusive phases of the Lovozero alkalic massif (Kola peninsula);Balashov;Geochemistry (USSR),1962
2. Rare earths in the eudialyte complex of the Lovozero alkalic massif;Balashov;Geochemistry (USSR),1961
3. Rare earths in perovskites (knopites) from massifs of ultrabasic-alkaline rocks;Borodin;Geokhimiya,1960
4. On the composition of rare earths in pyrochlors from massifs of ultrabasic-alkaline rocks and carbonatites;Borodin;Geokhimiya,1961
5. Rare earths in yttrotungstite;Butler;Geochim. Cosmochim. Acta,1957