Anwar L Nata, A., Riani, N., Harris, A., & Anggraeni, E. (2023). Can Lexicographic Goal Programming, Artificial Neural Networks, and Value-at-risk Methods be Effective in Analysis of 50 Highest Trade Frequency Issuers Optimum Portfolio. KnE Social Sciences, 8(16), 211–223. https://doi.org/10.18502/kss.v8i16.14043