Doll-Tepper, Gudrun; Kröner, Michael; Sonnenschein, Werner; International Paralympic Committee, Sport Science Committee (2001). "Organisation and Administration of the Classification Process for the Paralympics". New Horizons in sport for athletes with a disability : proceedings of the International VISTA '99 Conference, Cologne, Germany, 28 August-1 September 1999. Vol. 1. Oxford (UK): Meyer & Meyer Sport. pp. 379–392. ISBN1841260363. OCLC48404898.
Doll-Tepper, Gudrun; Kröner, Michael; Sonnenschein, Werner; International Paralympic Committee, Sport Science Committee (2001). "Organisation and Administration of the Classification Process for the Paralympics". New Horizons in sport for athletes with a disability : proceedings of the International VISTA '99 Conference, Cologne, Germany, 28 August-1 September 1999. Vol. 1. Oxford (UK): Meyer & Meyer Sport. pp. 355–368. ISBN1841260363. OCLC48404898.