Full Idea
For Boolos, the Replacement Axioms go beyond the iterative conception.
Gist of Idea
Do the Replacement Axioms exceed the iterative conception of sets?
Source
report of George Boolos (The iterative conception of Set [1971]) by Penelope Maddy - Naturalism in Mathematics I.3
Book Reference
Maddy,Penelope: 'Naturalism in Mathematics' [OUP 2000], p.59