My scientific interests include crystal chemistry of minerals and synthetic solids, X-ray crystal structure analysis, and electron density distribution. My current research has been focused on genetic aspects of mineral crystal chemistry with emphasis on phosphates with amphoteric oxocomplexes, which have promising technological potential as ion conductors, adsorbents, molecular sieves, magnetic materials, and catalysts. These researches are on the basis of an original course of lectures on genetic aspects of crystal chemistry of minerals and synthetic solids that I read to high-level students of the department of crystallography.