# An investigation of the usability of image-based CAPTCHAs using PROMETHEE-GAIA method

> Research article (Multimedia Tools and Applications, 2020) · cited 13× · AI/ML

**Wikidata**: [openalex:W3101301301](https://www.wikidata.org/wiki/openalex:W3101301301)  
**Source**: https://4ort.xyz/entity/an-investigation-of-the-usability-of-image-based-captchas-using-promethee-gaia-method