L. Camic, C., C. J. Hahn, B. C. Hendrickson, and A. R. Jagim. “VALIDATION OF THE PHYSICAL WORKING CAPACITY AT THE FATIGUE THRESHOLD TREADMILL TEST”. Kinesiology, vol. 49, no. 2, May 2017, pp. 146-52, https://hrcak.srce.hr/ojs/index.php/kinesiology/article/view/5702.