# Robust preconditioners for PDE-constrained optimization with limited observations

> Research article (BIT Numerical Mathematics, 2016) · cited 28× · AI/ML

**Wikidata**: [openalex:W822664379](https://www.wikidata.org/wiki/openalex:W822664379)  
**Source**: https://4ort.xyz/entity/robust-preconditioners-for-pde-constrained-optimization-with-limited-observations