Harold W. Thimbleby. The reduced Enigma. Computers & Security, 22(7):624-642, 2003. [doi]
@article{Thimbleby03, title = {The reduced Enigma}, author = {Harold W. Thimbleby}, year = {2003}, doi = {10.1016/S0167-4048(03)00712-0}, url = {http://dx.doi.org/10.1016/S0167-4048(03)00712-0}, researchr = {https://researchr.org/publication/Thimbleby03}, cites = {0}, citedby = {0}, journal = {Computers & Security}, volume = {22}, number = {7}, pages = {624-642}, }