Immonen Mika, Tahvanainen Kaisa, Viljainen, Satu (2010). Dynamics of supply portfolio models, IPSERA -conference, Lappeenranta, Finland, May 16-19, 2010.
Mika Immonen, Kaisa Tahvanainen, Satu Viljainen and Jarmo Partanen
(2009). Emergence of New Services through Competitive Change: Evidence from a Finnish Electricity Utility. Published in ISPIM 2009 Proceedings.