Shephard; "Tilings and Patterns", New York: W. H. Freeman & Co., (1987), ISBN 0-7167-1193-1.
" (1993)*"No Need to Argue" (1994)*"To the Faithful Departed" (1996)*"Bury the Hatchet" (1999)*"Wake Up and Smell the Coffee" (2001)*"Roses" (2012)== Viri ==== Zunanje povezave ==