References
- Statsokonomisk Tidsskrift, Oslo, 1924: 189–206.
- Thesis. Archiv fur Electrotechnik 1928; 21: 400.
- Kerst DW. The acceleration of electrons by magnetic induc-tion. Phys Rev 1941; 60: 47–58.
- Wider& R. Der Strahlentransformator. Archiv far Electro-technik 1943; 37: 542–55.NOTE FROM THE EDITOR