A e s | = r y , A x Dom A ( ) �� x Dom r ( ) �� r x ( ) T [ A x ( ) ] [ ] y �� A | = r y , e : s | = r y , A E [ e ] [ ] r T [ s ] [ ] y �� A | = e : t A | = r y , e : s r EEnv �� y TEnv �� A | - e : t A | = e : t A | - e : t A (1980)

by L Cardelli, X Leroy
Venue:In Stanford LISP Conference