Završnik, J., R. Pišot, T. Volmut, K. Koren, H. Blažun Vošner, P. Kokol, J. Vošner, and B. Šimunič. “LOWER CORRELATION BETWEEN BICEPS FEMORIS CONTRACTION TIME AND MAXIMAL RUNNING SPEED IN CHILDREN THAN IN ADULTS: A LONGITUDINAL STUDY IN 9- TO 14-YEAR OLD CHILDREN”. Annales Kinesiologiae, vol. 7, no. 1, Aug. 2016, pp. 21-42, http://ojs.zrs-kp.si/index.php/AK/article/view/112.