↑ Hodges, Andrew (1992) [1983], Alan Turing: the enigma, London: Burnett Books, p. 111, ISBN 0-04-510060-8 ↑ "Universal Turing Machine in XSLT". unidex.com. Retrieved 2010-07-05. ↑ http://www.cs.utexas.edu/users/boyer/ftp/ics-reports/cmp37.ps. (The book of Thomas Rauber and Gudula Rünger "Parallel programming: for multicore and cluster systems", 2010 provides an introduction for computation models.) ↑ "Cyclic Tag System".