http://benji3up2kxewkqfcq7buxk2xd6zwy3zggnurkrm3l4cvwy2iipvyyad.onion/mirrors/gmpdoc/References.html
Technical report available ftp://ftp.risc.uni-linz.ac.at/pub/techreports/1996/96-29.ps.gz Tudor Jebelean, “A Generalization of the Binary GCD Algorithm”, ISSAC 93,
pp. 111-116. Technical report version available ftp://ftp.risc.uni-linz.ac.at/pub/techreports/1993/93-01.ps.gz Tudor Jebelean, “A Double-Digit Lehmer-Euclid Algorithm for Finding the GCD
of Long Integers”, Journal of Symbolic Computation, volume 19, 1995,
pp. 145-157.