John Gallehawk. Third Person Singular (Warsaw, 1939). Cryptologia, 30(3):193-198, 2006. [doi]
@article{Gallehawk06, title = {Third Person Singular (Warsaw, 1939)}, author = {John Gallehawk}, year = {2006}, doi = {10.1080/01611190600612129}, url = {http://dx.doi.org/10.1080/01611190600612129}, researchr = {https://researchr.org/publication/Gallehawk06}, cites = {0}, citedby = {0}, journal = {Cryptologia}, volume = {30}, number = {3}, pages = {193-198}, }