Hybrid Fruit-Fly Optimization Algorithm with K-Means for Text Document Clustering Autori: Timea Bezdan, Catalin Stoean, Ahmed Al Naamany, Nebojša Bačanin Džakula, Tarik A. Rashid, Miodrag Živković, K. Venkatachalam Časopis: Mathematics DOI: 10.3390/math9161929