Muhammad Firdaus Al Farohi, Muhammad Jamie Rofie Quality and As'ary Ricklas Hidayat (2023) “Unraveling The Supply-Side Factors Shaping East Java’s Economy: Insights From PCA and Machine Learning”, INTERNATIONAL JOURNAL OF ECONOMICS AND MANAGEMENT REVIEW, 1(3), pp. 1–20. doi: 10.58765/ijemr.v1i3.162.