# GPR pattern recognition of shallow subsurface air voids

> Research article (Tunnelling and Underground Space Technology, 2020) · cited 57× · AI/ML

**Wikidata**: [openalex:W3006855808](https://www.wikidata.org/wiki/openalex:W3006855808)  
**Source**: https://4ort.xyz/entity/gpr-pattern-recognition-of-shallow-subsurface-air-voids