An Enhanced Version of Black Hole Algorithm via Levy Flight for Optimization and Data Clustering Problems Abdulwahab, Haneen A. ; Noraziah, A. ; Alsewari, Abdulrahman A. ; Salih, Sinan Q. Abstract Publication: IEEE Access Pub Date: 2019 DOI: 10.1109/ACCESS.2019.2937021 Bibcode: 2019IEEEA...7n2085A