Wangenheim M., Carlsöö S., Nordgren B., and Linroth K. “Perception of Efforts in Working Postures”. Upsala Journal of Medical Sciences 91, no. 1 (March 1, 1986): 53-66. Accessed April 25, 2024. https://ujms.net/index.php/ujms/article/view/6959.