Vijayaraghavan, G.; Mark Brown; Malcolm Barnes (December 30, 2008). "8.11 Avoidance of earth loop". Electrical noise and mitigation - Part 3: Shielding and grounding (cont.), and filtering harmonics. EDN Network, UBM Tech. Retrieved March 24, 2014.
Vijayaraghavan, G.; Mark Brown; Malcolm Barnes (December 30, 2008). "8.8.3 Magnetic or inductive coupling". Electrical noise and mitigation - Part 3: Shielding and grounding (cont.), and filtering harmonics. EDN Network, UBM Tech. Retrieved March 24, 2014.