1. Lotz, M., u.J. Raabe: Blade oscillations in one-stage axial turbomachinery. Trans. ASME, Serie D,90 (1968) Nr. 4, S. 485/93.
2. VDI-Forschungsheft;W. Lienhart,1974
3. Grein, H., u.B. Barp: Experimentelle Spannungsbestimmungen an Kaplanschaufeln. Escher-Wyss Mitt. (1970) Nr. 2, S. 22/27.
4. VDI-Forschungsheft;G. Mollenkopf,1971
5. Gerich, R., G. Schlemmer u.J. Raabe: Measurement of quasi-steady and unsteady flow field in Francis turbines of high specific speed, carried out before the runner, in the runner and in the draft tube. Internat. Assoc. Hydr. Res. (IAHR). Trans., Part I, 6th Sympos. Rom 1972.