Freqüència de les lletres (Catalan Wikipedia)

Analysis of information sources in references of the Wikipedia article "Freqüència de les lletres" in Catalan language version.

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cam.ac.uk

cl.cam.ac.uk

Lee, E. Stewart. «Essays about Computer Security». University of Cambridge Computer Laboratory, pàg. 181.

doi.org

dx.doi.org

Noyes, Jan «The QWERTY keyboard: a review». International Journal of Man-Machine Studies, 18, 3, agost 1988, pàg. 265–281. DOI: 10.1016/S0020-7373(83)80010-8.

google.cat

books.google.cat

Bauer, Friedrich L. Decrypted Secrets: Methods and maxims of cryptology, 2006, p. 57.
Telegraph and Telephone Age, 1921. «I allocated the most frequently used letters in English language to the signals represented by the fewest holes in the perforated tape, and so on in proportion.»

gutenberg.org

Poe, Edgar Allan. «The works of Edgar Allan Poe in five volumes». Project Gutenberg.

nap.edu

books.nap.edu

Ohlman, Herbert Marvin. Subject-Word Letter Frequencies with Applications to Superimposed Coding. Proceedings of the International Conference on Scientific Information, 1959.