# RETRACTED ARTICLE: Hybrid harmony search algorithm for social network contact tracing of COVID-19

> Research article (Soft Computing, 2021) · cited 32× · AI/ML

**Wikidata**: [openalex:W3173855760](https://www.wikidata.org/wiki/openalex:W3173855760)  
**Source**: https://4ort.xyz/entity/retracted-article-hybrid-harmony-search-algorithm-for-social-network-contact-tracing-of-covid-19