Wirawan C, Sarvia E, Widjaja JH, Martin M. Designing an Ergonomic Elderly Trolley to Improve Hypermarket Competitiveness: an Indonesian Perspective. JIS [Internet]. 2025Jan.1 [cited 2025Jan.15];7(2):184-99. Available from: http://114.7.153.31/index.php/jis/article/view/10374