1. Abel, U. (1984): Die Beurteilung von Indexschätzungen zur Validiedierung diagnostischer Tests. Tumordiagnostik & Therapie 5, 242–248
2. Abel, U., Berger, J., Weber, E. (1984): Markertest — Statistische Verfahren und Programme zur Validierung biologischer Marker. EDV in Med. u. Biol. 15, 117–125
3. Abel, U., Berger, J. (1985): Comparison of Resubstitution, Data Splitting, the Bootstrap, and the Jackknife as Methods for Estimating the Validity Indices of New Marker Tests. Forthcoming in Biom. J.
4. Abel, U., Seiffert, G. (1985): On the Benefit of Repeating Simple Diagnostic Tests. Preprint.
5. Bennett, B. M. (1972): On Comparisons of Sensitivity, Specificity, and Predictive Value of a Number of Diagnostic Procedures. Biometrics 28, 793–800