Atikah, L., N. Hasanah, and A. Arifin. “Topic Modelling Using VSM-LDA For Document Summarization”. Ultimatics : Jurnal Teknik Informatika, Vol. 14, no. 2, Dec. 2022, pp. 91-95, doi:https://doi.org/10.31937/ti.v14i2.2854.