Gerodimos Βασίλειος, Stavropoulos Νικόλαος, Tsiokanos Αθανάσιος, and Katsareli Ελευθερία. 2005. “The Effect of Different Methods of Strength Evaluation in Hamstrings / Quadriceps Muscle Group Ratio”. Inquiries in Physical Education and Sport 3 (3):292-97. https://journals.lib.uth.gr/index.php/inquiries/article/view/1110.