Wheeler, David J.; Needham, Roger M. (16/12/1994). "TEA, a tiny encryption algorithm". Lecture Notes in Computer Science. Leuven, Belgium: Fast Software Encryption: Second International Workshop.
Roger M. Needham, David J. Wheeler (October 1997). Tea extensions (PDF). Computer Laboratory, University of Cambridge (Technical report).
David J. Wheeler and Roger M. Needham (October 1998). "Correction to XTEA" (PDF). Computer Laboratory, Cambridge University, England. Retrieved 2008-07-04