K. Lilja, K. Laakso, и J. Palomki. Technology Management in the Energy Smart World (PICMET), 2011 Proceedings of PICMET '11:, стр. 1--10. IEEE, (августа 2011)
C. de Souza, S. Quirk, E. Trainer, и D. Redmiles. Proceedings of the 2007 international ACM conference on Supporting group work, стр. 147--156. New York, NY, USA, ACM, (2007)