# The Gardner Problem on the Lock-In Range of Second-Order Type 2 Phase-Locked Loops

> Research article (IEEE Transactions on Automatic Control, 2023) · cited 24× · AI/ML

**Wikidata**: [openalex:W4381925111](https://www.wikidata.org/wiki/openalex:W4381925111)  
**Source**: https://4ort.xyz/entity/the-gardner-problem-on-the-lock-in-range-of-second-order-type-2-phase-locked-loops