1. A program for correcting spelling errors;Blair;Inform. Control,1960
2. Long-range constraints in the statistical structure of printed English;Burton;Am. J. Psychol.,1955
3. Relative Frequency of English Speech Sounds;Dewey,1923
4. Relative Frequency of English Speech Sounds;Dewey,1950
5. Cryptanalysis, A Study of Ciphers and Their Solution;Gaines,1956