Khatami M, Ginting R, Ishak A. Analysis of Production Line Balance with Helgeson Birnie Approach on Plastic Chopping Machine. j.sist.teknik.industri. [Internet]. 2023 Jan. 28 [cited 2025 Dec. 19];25(1):50-5. Available from: https://idjpcr.usu.ac.id/jsti/article/view/9288