Injuries of competitive board sailors

von Ullis, Karlis C. (Autor), ... Anno, Kelby (Autor)
Erschienen in The physician and sportsmedicine, 12 (1984), 6, S. 86-93, Lit.

An analysis of roller skating injuries

von Ferkel, Richard D. (Autor), ... Mai, Larry L. (Autor), Ullis, Karlis C. (Autor), Finerman, Gerald A.M. (Autor)
Erschienen in The American journal of sports medicine, 10 (1982), 1, S. 24-30, Lit.