• Teach Yourself Scheme in Fixnum Days (2015) https://ds26gte.github.io/tyscheme/ 26 comments 28/5/2018
• Teach Yourself Scheme in Fixnum Days http://www.ccs.neu.edu/home/dorai/t-y-scheme/t-y-scheme-Z-H-1.html 3 comments 3/7/2008

• Teach Yourself Scheme in Fixnum Days http://www.ccs.neu.edu/home/dorai/t-y-scheme/t-y-scheme.html 7 comments 6/4/2004 teaching/learning