Kreighbaum, E., Barthels, K. M. Julkaistu 1996 “...Barthels, K. M....”
Madigan, P. J., Barthels, K. M. Julkaisussa ISBS - Conference Proceedings Archive (Konstanz) (1995) “...Barthels, K. M....”
Barthels, K. M. Julkaisussa Swimming III. Proceedings of the Third International Symposium of Biomechanics in Swimming, University of Alberta, Edmonton, Canada (1979) “...Barthels, K. M....”
Barthels, K. M., Adrian, M. J. Julkaisussa Swimming II: Proceedings of the Second International Symposium on Biomechanics in Swimming, Brussels, Belgium (1975) “...Barthels, K. M....”
Barthels, K. M., Adrian, A. J. Julkaisussa First International Symposium on "Biomechanics and Swimming, Waterpolo and Diving", 14-16 September 1970. Proceedings (1971) “...Barthels, K. M....”