# A time-dependent extension of the projected normal regression model for longitudinal circular data based on a hidden Markov heterogeneity structure

> Research article (Stochastic Environmental Research and Risk Assessment, 2015) · cited 23× · AI/ML

**Wikidata**: [openalex:W2266340207](https://www.wikidata.org/wiki/openalex:W2266340207)  
**Source**: https://4ort.xyz/entity/a-time-dependent-extension-of-the-projected-normal-regression-model-for-longitudinal-circular-data-based-on-a-hidden-mar