http://ontesla.com/

http://kaizerpowerelectronics.dk/

https://www.stevehv.4hv.org/

http://www.loneoceans.com/

http://iopscience.iop.org/article/10.1088/0022-3727/47/35/355201

http://people.physics.anu.edu.au/~jnh112/AIIM/c17/Plasma_discharge_fundamentals.pdf

http://www.capturedlightning.org/hot-streamer/stk/tc/coilbld.htm