Paulson, Stanley L.
"Constraints on Legal Norms: Kelsen's View in the "Essays" (reviewing Hans Kelsen: Essays in Legal and Moral Philosophy by Hans Kelsen, O. Weinberger, P. Heath),"
University of Chicago Law Review: Vol. 42
, Article 15.
Available at: http://chicagounbound.uchicago.edu/uclrev/vol42/iss4/15