# Validities, antivalidities and contingencies: A multi-standard approach

> Research article (Journal of Philosophical Logic, 2021) · cited 16× · AI/ML

**Wikidata**: [openalex:W3180773547](https://www.wikidata.org/wiki/openalex:W3180773547)  
**Source**: https://4ort.xyz/entity/validities-antivalidities-and-contingencies-a-multi-standard-approach