Whitley EA, Hosein IR. Policy Engagement as Rigourous and Relevant Information Systems Research: The Case of the LSE Identity Project [Internet]. Österle H, Schelp J, Winter R. Proceedings of the Fifteenth European Conference on Information Systems. St. Gallen: University of St. Gallen; 2007. pp. 1301-1312. ECIS2007.pdf
Heym M, Österle H. A Reference Model for Information Systems Development. The Impact of Computer Supported Technologies in Information Systems Development. 1992. pp. 215-239.