# Treatment for Residual Rhotic Errors With High- and Low-Frequency Ultrasound Visual Feedback: A Single-Case Experimental Design

> Research article (Journal of Speech Language and Hearing Research, 2018) · cited 28× · AI/ML

**Wikidata**: [openalex:W2887044438](https://www.wikidata.org/wiki/openalex:W2887044438)  
**Source**: https://4ort.xyz/entity/treatment-for-residual-rhotic-errors-with-high-and-low-frequency-ultrasound-visual-feedback-a-single-case-experimental-d