Simulating Discount-Pricing Strategies for the GSM-Mobile Market. - Sven Schade; Thorsten Frey; Nezar Mahmoud (Bus. Inf. Syst. Eng., 2009)

The importance of governance structures in IT project portfolio management. - Thorsten Frey; Peter Buxmann (ECIS, 2011)

It Project portfolio Management - a Structured literature Review. - Thorsten Frey; Peter Buxmann (ECIS, 2012)