Programmable springs: Developing actuators with programmable compliance for autonomous robots. - Bill Bigge; Inman R. Harvey (Robotics Auton. Syst., 2007)

Implicit Fitness Functions for Evolving a Drawing Robot. - Jon Bird; Phil Husbands; Martin Perris; Bill Bigge; Paul Brown (EvoWorkshops, 2008)

The elongation catastrophe in physical self-replicators. - Nathaniel Virgo; Chrisantha Fernando; Bill Bigge; Phil Husbands (ECAL, 2011)

Evolvable Physical Self-Replicators. - Nathaniel Virgo; Chrisantha Fernando; Bill Bigge; Phil Husbands (Artif. Life, 2012)