# On $$ {\varSigma}_t^{\sigma } $$ -Closed Classes of Finite Groups

> Research article (Ukrainian Mathematical Journal, 2019) · cited 13× · AI/ML

**Wikidata**: [openalex:W2959735760](https://www.wikidata.org/wiki/openalex:W2959735760)  
**Source**: https://4ort.xyz/entity/on-varsigma-t-sigma-closed-classes-of-finite-groups