Daniel G. Bobrow Linda G. DeMichiel Richard P. Gabriel Sonya E. Keene Gregor Kiczales David A. Moon Common Lisp Object System Specification X2JI3 Document 88-002R 1.1-2.94 1988 23 SIGPLAN Notices Special Issue db/journals/sigplan/sigplan23.html#BobrowMGKKM88