ASCII and EBCDIC Sequencing.

http://doi.acm.org/10.1145/983061.983063 db/journals/sigmod/Little73.html John L. Little ASCII and EBCDIC Sequencing. 14-16 sigmodR/05-2/P014.pdf 1973 5 FDT - Bulletin of ACM SIGFIDET 2 db/journals/sigmod/sigmod5.html#Little73