Entry and Innovation in Maturing Markets: Virtual Operators in Mobile Telecommunications. - Ferdinand Jaspers; Willem Hulsink; Jules Theeuwes (Technol. Anal. Strateg. Manag., 2007)

Open innovation and systems integration: how and why firms know more than they make. - Ferdinand Jaspers; Jan van den Ende (Int. J. Technol. Manag., 2010)