2002, George W. Barlow,The Cichlid Fishes: Nature’s Grand Experiment In Evolution, Da Capo Press,→ISBN,page100:
Amoz Zahavi[sic] argued, however, that natural selection should favor signals that cannot be cheated.32Uncheatable signals carry a cost, a handicap.
2005, Song Han, Elizabeth Chang, Jie Wang, “Attack on Undeniable Partially Blind Signatures”, in Andrew Blyth, editor,EC2ND 2005: Proceedings Of The First European Conference on Computer Network Defence, School Of Computing, University of Glamorgan, Wales, UK, Birkhäuser, published2006,→ISBN, page143:
We show that the signer can disavow any valid signature to the verifier. In other words, we show that the disavowal of their scheme is notuncheatable.