# Regularized CASPT2: an Intruder-State-Free Approach

> Research article (Journal of Chemical Theory and Computation, 2022) · cited 53× · AI/ML

**Wikidata**: [openalex:W4287378460](https://www.wikidata.org/wiki/openalex:W4287378460)  
**Source**: https://4ort.xyz/entity/regularized-caspt2-an-intruder-state-free-approach