Hendrix, Tommy, Mahardhika Berliandaldo, Eki Karsani Apriliyadi, and Firman Tri Ajie. “The Impact of Patent Portfolio on Competitive Landscape of Digital Signage Apparatus”. Jurnal Manajemen Teknologi 20, no. 1 (April 29, 2021): 79–97. Accessed May 19, 2024. https://journal.sbm.itb.ac.id/index.php/mantek/article/view/3694.