Purnomo, H.D. et al. 2012. Harmony Search for Balancing Two-sided Assembly Lines. Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri. 14, 2 (Dec. 2012), 83–88. DOI:https://doi.org/10.9744/jti.14.2.83-88.