Kartika, Mohammad, et al. “The Effect Of Packing Machine Automation On Operator Productivity With Moderation Of Technical Competence And Workload Perception: Systematic Literature Review (SLR) With Bibliometrics”. Economics and Business Journal (ECBIS), vol. 4, no. 6, Aug. 2026, pp. 2855-74, doi:10.47353/ecbis.v4i5.374.