Wulandari, Dwi, Mit Witjaksono, Thomas Soseco, and Bagus Shandy Narmaditya. “The Development of Productive Economy Cluster through Siparti 3-S and Triple Helix in Kabupaten Lumajang, Indonesia”. International Journal of Economics and Financial Issues 7, no. 2 (April 3, 2017): 25–31. Accessed December 23, 2024. https://econjournals.com./index.php/ijefi/article/view/3796.