Pascal Costanza Richard P. Gabriel Robert Hirschfeld Guy L. Steele Jr. Lisp50: The 50th birthday of lisp at OOPSLA 2008. 853-854 2008 OOPSLA Companion http://doi.acm.org/10.1145/1449814.1449882 conf/oopsla/2008c db/conf/oopsla/oopsla2008c.html#CostanzaGHS08