# On the ~ 7 year periodic signal in length of day from a frequency domain stepwise regression method

> Research article (Journal of Geodesy, 2021) · cited 13× · AI/ML

**Wikidata**: [openalex:W3158129176](https://www.wikidata.org/wiki/openalex:W3158129176)  
**Source**: https://4ort.xyz/entity/on-the-7-year-periodic-signal-in-length-of-day-from-a-frequency-domain-stepwise-regression-method