# CTFFIND4: Fast and accurate defocus estimation from electron micrographs

> Research article (Journal of Structural Biology, 2015) · cited 5,556× · AI/ML

**Wikidata**: [openalex:W2953320394](https://www.wikidata.org/wiki/openalex:W2953320394)  
**Source**: https://4ort.xyz/entity/ctffind4-fast-and-accurate-defocus-estimation-from-electron-micrographs