(1)
du Toit, D.; Olivier, P.; Grenfell, L.; Eksteen, B. Isokinetic Neck Strength Norms for Schoolboy Rugby Forwards.
SA J Sports Med
2005
,
17
(1), 19-26.
https://doi.org/10.17159/2078-516X/2005/v17i1a175
.