a Literature review distill the existing literature in a subject field; the objective of the literature review is to summarize the state of the art in that subject field. From this review of earlier and recent work, it bacomes possible to identify areas in which furture research would be benefitcial. Indeed, the concluding paragraphs of the literature review should lead seamlessly to research propositions and methodologies. It is therefore important that the literature review is focused, and avoids the more comprehensive textbook-like approach.