# Observability of singular time-delay systems with unknown inputs

> Research article (Systems & Control Letters, 2016) · cited 12× · AI/ML

**Wikidata**: [openalex:W2238839205](https://www.wikidata.org/wiki/openalex:W2238839205)  
**Source**: https://4ort.xyz/entity/observability-of-singular-time-delay-systems-with-unknown-inputs