John F. Byrne's Chaocipher Revealed: An Historical and Technical Appraisal. - Moshe Rubin (Cryptologia, 2011)

Chaocipher Exhibit 5: History, Analysis, and Solution of Cryptologia's 1990 Challenge. - Jeff Calof; Jeff Hill; Moshe Rubin (Cryptologia, 2014)

Cryptanalysis of Chaocipher and solution of Exhibit 6. - George Lasry; Moshe Rubin; Nils Kopal; Arno Wacker (Cryptologia, 2016)