Rizqi, R. I. ., N. A. . Rohma, and D. K. . Nimkerdphol. “Inventory Management System Using QR Code on Android a Case Study in Computer Engineering Department”. JEECS (Journal of Electrical Engineering and Computer Sciences), vol. 3, no. 1, June 2018, pp. 381-8, doi:10.54732/jeecs.v3i1.144.