Tatiana Kalganova Julian F. Miller Evolving More Efficient Digital Circuits by Allowing Circuit Layout Evolution and Multi-Objective Fitness. 54- 1999 conf/eh/1999 Evolvable Hardware http://csdl.computer.org/comp/proceedings/eh/1999/0256/00/02560054abs.htm db/conf/eh/eh1999.html#KalganovaM99