# A Nonlinear Dynamic Systems Model of Psychotherapy: First Steps Toward Validation and the Role of External Input.

> Research article (PubMed, 2019) · cited 10× · AI/ML

**Wikidata**: [openalex:W3024309691](https://www.wikidata.org/wiki/openalex:W3024309691)  
**Source**: https://4ort.xyz/entity/a-nonlinear-dynamic-systems-model-of-psychotherapy-first-steps-toward-validation-and-the-role-of-external-input