Towards Performance Measurement in Virtual Organizations - Potentials, Needs, and Research Challenges. - Falk Graser; Kim Jansson; Jens Eschenbächer; Ingo Westphal; Ugo Negretto (PRO-VE, 2005)

Measuring Collaboration Performance In Virtual Organizations. - Ingo Westphal; Klaus-Dieter Thoben; Marcus Seifert (Virtual Enterprises and Collaborative Networks, 2007)

Collaborative Assessment of Potential Value Generation in Development Projects. - Ingo Westphal; Jens Eschenbächer; Donatella Vedovato (PRO-VE, 2010)

Managing collaboration performance to govern virtual organizations. - Ingo Westphal; Klaus-Dieter Thoben; Marcus Seifert (J. Intell. Manuf., 2010)

Service Innovation Life Cycle in a Manufacturing Ecosystem. - Mike Freitag 001; Ingo Westphal (NGEBIS, 2012)

Manufacturing Service Ecosystems - Towards a New Model to Support Service Innovation Based on Extended Products. - Stefan A. Wiesner; Ingo Westphal; Manuel Hirsch; Klaus-Dieter Thoben (APMS (2), 2012)

Visualization of Interactions Between Product and Service Lifecycle Management. - Ingo Westphal; Mike Freitag 001; Klaus-Dieter Thoben (APMS (2), 2015)

Evaluating potential Business Models for innovative Product Service Systems : Transparency regarding the relation to existing business. - Ingo Westphal; Klaus-Dieter Thoben; Marco Seregni (ICE/ITMC, 2016)

Conceptual Framework for Product Service Systems. - Amir Pirayesh; Guy Doumeingts; Marco Seregni; Sergio Gusmeroli; Ingo Westphal; Lara González; Carl Hans; María José Núñez Ariño; Alessandro Canepa Eugenio; Andoni Laskurain (Syst., 2018)