Hugo de Garis Thayne Batty The Evolution of Robust, Reversible, Nano-Scale, Femto-Second-Switching Circuits. 291-297 2004 conf/eh/2004 Evolvable Hardware http://doi.ieeecomputersociety.org/10.1109/EH.2004.1310843 db/conf/eh/eh2004.html#GarisB04