From an exploratory physics perspective, the early papers from Gennady A. Mesyats are fascinating. Good details on electrode materials and geometry, electrical parameters, explosion event.
If only he had looked at the energy balance or considered the structure could catalyze a nuclear process...
DOI 10.1109/TEI.1983.298603
DOI 10.1016/0022-3115(84)90423-9
DOI 10.1109/DEIV.1996.545457