Bentley built his Markov chain using his Bell labs colleagues Pike & Kernighan's Markov algorithm from The Practice of Programming http://books.google.co.uk/b

Bentley built his Markov chain using his Bell labs colleagues Pike & Kernighan's Markov algorithm from The Practice of Programming http://books.google.co.uk/books?id=to6M9_dbjosC&pg=PA62&lpg=PA62&ots=3YL0Fgy14b&dq=markov+practice+of+programming http://books.google.co.uk/books?id=to6M9_dbjosC&pg=PA62&... Pike had used this technique earlier when coding up http://en.wikipedia.org/wiki/Mark_V_Shaney http://en.wikipedia.org/wiki/Mark_V_Shaney with Bruce Ellis I'm sure they were not the first