EN
This article offers the ways to achieve adequate codification of the Russian particles in the thesaurus’s entries. To achieve the object of the topic, there have been solved following problems: 1) the reasons of wrong codifications of the Russian particles in the Russian thesaurus are being established; 2) ways of formation of the derivative particles are revealed; 3) structural types of Russian particles are identified; 4) elements of attributes of the Russian particles in the entry are being established.