On the minimum stage realization of switching functions using logic gates with limited fan-in

G. L. Hicks, Arthur J. Bernstein. On the minimum stage realization of switching functions using logic gates with limited fan-in. In Proceedings of the Fifth Annual Symposium on Switching Circuit Theory and Logical Design, 11-13 November 1964, Princeton, New Jersey, USA. pages 149-155, IEEE, 1964.