1. Anwar, H.O.: Prevention of vortices at intakes. Water Power 10, 393–401 (1968)
2. Gordon, J.L.: Vortices at intakes. Water Power 1970(4), 137–138 (1970)
3. Reddy, Y.R.; Pickford, J.A.: Vortices at intakes in conventional sumps. Water Power 1972(3), 108–109 (1972)
4. Rindelsand, A. J.; Gulliver, J. S.: An experimental study of critical submergence to avoid free-surface vortices at vertical intakes. In: Project Report No: 224, University of Minnesota, St. Anthony Falls Hydraulic Laboratory (1983)
5. Knauss, J.: Swirling Flow Problems at Intakes. A. A. Balkema, Rotterdam (1987)