Sabire Akın, et al. “RELIABILITY OF BACK CONCENTRIC ISOKINETIC MUSCLE TESTING USING BIODEX ISOKINETIC DYNAMOMETER”. Archives of Rheumatology, vol. 19, no. 1, Mar. 2004, pp. 015-9, https://www.archivesofrheumatology.org/index.php/pub/article/view/125.