Limits of space-times in five dimensions and their relation to the Segre   Types
  A limiting diagram for the Segre classification in 5-dimensional space-times is obtained, extending a recent work on limits of the energy-momentum tensor in general relativity. Some of Geroch's results on limits of space-times in general relativity are also extended to the context of five-dimensional Kaluza-Klein space-times. 
F. M. Paiva, M. J. Rebou\c{c}as, A. F. F. Teixeira