Arif, Muhammad, and Novita Damayanti. “Konsentrasi Dan Distribusi Spasial Industri Unggulan Kabupaten Sragen Berdasarkan Analisis Concentration Index Dan Sistem Informasi Geografis”. Prosiding University Research Colloquium (January 21, 2019): 52–61. Accessed May 19, 2024. https://repository.urecol.org/index.php/proceeding/article/view/515.