Juhani Warsta Veikko Seppänen Value Network Positioning of Expected Winners: Analysis of the Top Software Business Start-ups. 43-52 2007 conf/ifip8/2007-1 CONFENIS (1) http://dx.doi.org/10.1007/978-0-387-75902-9_5 db/conf/ifip8/confenis2007-1.html#WarstaS07