Core competence and learning alliances - the new face of information management? - Hans P. Lehmann (ECIS, 1993)

Between heterarchies and serendipity: Exploring the development of international information systems. - Hans P. Lehmann (ECIS, 1994)

Coupling core competencies - wiring information technology into the business. - Hans P. Lehmann (Business Process Re-Engineering, 1994)

A Definition of Research Focus for International Information Systems. - Hans P. Lehmann (HICSS (3), 1997)

Towards a Grounded Theory of Information Systems for the International Firm: Critical Variables and Causal Networks. - Hans P. Lehmann (ECIS, 2000)

An Object Oriented Architecture Model for International Information Systems? Exploring a Possible Approach. - Hans P. Lehmann (ECIS, 2001)

Rigour And Relevance In Studies Of IS Innovation : A Grounded Theory Methodology Approach. - Walter D. Fernández; Hans P. Lehmann; Alan Underwood (ECIS, 2002)