3 ms·
but see also https://nsarchive.gwu.edu/sites/default/files/documents/5301753/National-Security-Agency-Cryptolog-Vol-1-No-4.pdf#page=14 https://nsarchive.gwu.edu
by 082349872349872 2y ago
but see also https://nsarchive.gwu.edu/sites/default/files/documents/5301753/National-Security-Agency-Cryptolog-Vol-1-No-4.pdf#page=14 https://nsarchive.gwu.edu/sites/default/files/documents/5301... (1974, pp12-14)
I was amused to learn that email may get lost in the «спам» folder...