Biryukov, Alex; Nakahara, Jorge Jr.; Preneel, Bart; Vandewalle, Joos «New Weak-Key Classes of IDEA». Information and Communications Security, 4th International
Conference, ICICS 2002, pàg. 315–326. «While the zero-one weak keys problem of IDEA can be corrected just by XORing a fixed constant to all the keys (one such constant may be 0DAEx as suggested in [4]) the problem with the runs of ones may still remain and will require complete redesign of the IDEA key schedule.»
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Daemen, Joan; Govaerts, Rene; Vandewalle, Joos «Weak Keys for IDEA». Advances in Cryptology, CRYPTO 93 Proceedings, 1993, pàg. 224–231.
