Modelling Artificial Ecosystem Selection: A Preliminary Investigation. - Alexandra S. Penn (ECAL, 2003)

Individual Selection for Cooperative Group Formation. - Simon T. Powers; Alexandra S. Penn; Richard A. Watson (ECAL, 2007)

What can artificial life offer the development of methodologies in the field of socio-ecological sustainability? - Alexandra S. Penn (ALIFE, 2008)

Mechanisms for the initiation of multicellularity in bacterial biofilms. - Alexandra S. Penn; Richard A. Watson; Simon T. Powers; Jeremy Webb; Alexander Kraaijeveld; Tim Conibear; Zoe Bigg (ALIFE, 2008)

The Efficacy of Group Selection is Increased by Coexistence Dynamics within Groups. - Simon T. Powers; Alexandra S. Penn; Richard A. Watson (ALIFE, 2008)

Can individual selection favour significant higher-level selection? - Richard A. Watson; Rob Mills; Alexandra S. Penn; Simon T. Powers (ALIFE, 2008)

Can Selfish Symbioses Effect Higher-Level Selection? - Richard A. Watson; Niclas Palmius; Rob Mills; Simon T. Powers; Alexandra S. Penn (ECAL (2), 2009)

Systems Aikido - A Novel Approach to Managing Natural Systems. - Alexandra S. Penn; Richard A. Watson; Alexander Kraaijeveld; Jeremy Webb (ALIFE, 2010)

Adaptation without Natural Selection. - Richard A. Watson; Rob Mills; Christopher L. Buckley; Simon T. Powers; Alexandra S. Penn; Adam P. Davies; Jason Noble; Seth Bullock (ALIFE, 2010)

The concurrent evolution of cooperation and the population structures that support it - Simon T. Powers; Alexandra S. Penn; Richard A. Watson (CoRR, 2012)

Defining Relevance and Finding Rules: An Agent-Based Model of Biomass Use in the Humber Area. - Frank Schiller; Anne C. Skeldon; Tina Balke; Michelle Grant; Alexandra S. Penn; Lauren Basson; Paul D. Jensen; Nigel Gilbert; Özge Dilaver Kalkan; Amy Woodward (ESSA, 2013)

Linear and sigmoidal fuzzy cognitive maps: An analysis of fixed points. - Christopher J. K. Knight; David J. B. Lloyd; Alexandra S. Penn (Appl. Soft Comput., 2014)

Sketching a network portrait of the humber region. - Alexandra S. Penn; Paul D. Jensen; Amy Woodward; Lauren Basson; Frank Schiller; Angela Druckman (Complex., 2014)

Simpson's Paradox, Co-operation and Individuality in Bacterial Biofilms. - Alexandra S. Penn (ECAL, 2015)

Steering a Complex Adaptive System: A Complexity Science Design Methodology Applied to an Industrial Ecosystem in the Humber Region, UK. - Alexandra S. Penn (ECAL, 2015)

"Artificial Life and Society: Philosophies and Tools for Experiencing, Interacting with and Managing Real World Complex Adaptive Systems. - Alexandra S. Penn (ALIFE, 2016)

A Web-based Tool for Identifying Strategic Intervention Points in Complex Systems. - Sotiris Moschoyiannis; Nicholas Elia; Alexandra S. Penn; David J. B. Lloyd; Christopher J. K. Knight (Cassting/SynCoP, 2016)

A New Home for a Vital Conversation: Introducing the ALife Societal Impact Section and Going Back to Bio-Inspiration for the Internet. - Alexandra S. Penn (Artif. Life, 2017)

Report on the ISAL Special Session on ALife and Society, ALife XV, Cancún, Mexico, 2016. - Alexandra S. Penn (Artif. Life, 2018)

Moving from Overwhelming to Actionable Complexity in Population Health Policy: Can ALife help? - Alexandra S. Penn (Artif. Life, 2018)

Towards Low-Carbon Conferencing: Acceptance of Virtual Conferencing Solutions and Other Sustainability Measures in the ALIFE Community. - Harold Fellermann; Alexandra S. Penn; Rudolf M. Füchslin; Jaume Bacardit; Ángel Goñi-Moreno (ALIFE, 2019)

On the Potential for Open-Endedness in Neural Networks. - Nicholas Guttenberg; Nathaniel Virgo; Alexandra S. Penn (Artif. Life, 2019)