Hashmi, M., M. Lehtonen, and S. Hänninen. “Modelling and Analysis of Lightning Overvoltage Protection of MV Cable Laterals Connected With Overhead Lines”. Elektronika Ir Elektrotechnika, vol. 123, no. 7, July 2012, pp. 49-52, doi:10.5755/j01.eee.123.7.1325.