Jamaluddin, S.H., Zulkipli, N.A., Mahmud, N. and Muhamat Pazil, N.S. 2018. Firefly Algorithm: Minimizing Cost on Single-Level Lot-Sizing Problem. Journal of Computing Research and Innovation. 3, 1 (Oct. 2018), 55–63. DOI:https://doi.org/10.24191/jcrinn.v3i1.89.