# US Trade Policy Uncertainty and Nigeria’s Participation in Global Value Chains: Evidence from Frequency Domain Causality, Wavelet Coherence Analysis, and Time-Varying Causality

> Research article (Journal of the Knowledge Economy, 2024) · cited 12× · AI/ML

**Wikidata**: [openalex:W4395462810](https://www.wikidata.org/wiki/openalex:W4395462810)  
**Source**: https://4ort.xyz/entity/us-trade-policy-uncertainty-and-nigerias-participation-in-global-value-chains-evidence-from-frequency-domain-causality-w