Analog and digital simulation of line-energizing overvoltages and comparison with measurements in a 400 kV network / by W.F.J. Kersten and G.A.P. JacobsExtensive testing of an algorithm for travelling-wave-based directional detection and phase-selection by using TWONFIL and EMTP / by M.H.J. Bollen and G.A.P. JacobsImplementation of an algorithm for travelling-wave-based directional detection / by M.H.J. Bollen and G.A.P. Jacobs