“fix-points: Quines, in Scheme and MetaOCaml” by Oleg Kiselyov http://conway.rutgers.edu/~ccshan/wiki/blog/posts/Quines/

the horror that is selfGOL

third order quines > http://sigfpe.blogspot.com/2008/02/third-order-quine-in-three-languages.html

An uroboros quine relay with 50 programming languages > https://github.com/mame/quine-relay

miniKanren, Live and Untagged: Quine Generation via Relational Interpreters“ http://users-cs.au.dk/danvy/sfp12/papers/byrd-holk-friedman-paper-sfp12.pdf