Clote & Kranakis (2002), p. 437. Peter Clote e Evangelos Kranakis, Boolean functions and computation models, Texts in Theoretical Computer Science. An EATCS Series, Berlino, Springer-Verlag, 2002, ISBN3-540-59436-1, Zbl1016.94046.
Clote & Kranakis, p. 12. Peter Clote e Evangelos Kranakis, Boolean functions and computation models, Texts in Theoretical Computer Science. An EATCS Series, Berlino, Springer-Verlag, 2002, ISBN3-540-59436-1, Zbl1016.94046.