AC-voltage performance of field aged glass insulator stringsHyvönen, Petri; Klüss, Joni; Taklaja, PaulICHVE 2014 : 2014 International Conference on High Voltage Engineering and Application : 8-11 September 2014, Poznan, Poland2014 / [4] p. : ill Practical E-field sensors for EMP testingKlüss, Joni; Hyvönen, PetriICHVE 2014 : 2014 International Conference on High Voltage Engineering and Application : 8-11 September 2014, Poznan, Poland2014 / [4] p. : ill