Umam, K., F. W. Putro, G. Q. O. Pratamasunu, A. Z. Arifin, and D. Purwitasari. “COVERAGE, DIVERSITY, AND COHERENCE OPTIMIZATION FOR MULTI-DOCUMENT SUMMARIZATION”. Jurnal Ilmu Komputer Dan Informasi, Vol. 8, no. 1, Mar. 2015, pp. 1-10, doi:10.21609/jiki.v8i1.278.