Purnomo, H. D., Wee, H.-M., & Rau, H. (2012). Harmony Search for Balancing Two-sided Assembly Lines. Jurnal Teknik Industri: Jurnal Keilmuan Dan Aplikasi Teknik Industri, 14(2), 83-88. https://doi.org/10.9744/jti.14.2.83-88