# Oleg D. Jefimenko

> American physicist (1922–2009)

**Wikidata**: [Q4177346](https://www.wikidata.org/wiki/Q4177346)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Oleg_D._Jefimenko)  
**Source**: https://4ort.xyz/entity/oleg-d-jefimenko