Bettina Koeper has been working at Bielefeld University Library since 1996 where she is concerned mostly with administrative tasks, project management and planning of project activities in various subject areas. She was involved in the management of several projects dealing with the development of electronic library services including, for example, the Digital Library North Rhine-Westphalia (1998-2000). Currently a major task of her is ProSeBiCA, a project funded by the German Research Foundation (DFG) and carried out in co-operation with the Chair of Marketing, Department of Business Administration and Economics at Bielefeld University, in order to adopt conjoint analysis as a marketing method in the library context.