R. Agrawal, T. Imielinski, and A. Swami. Proceedings of the 1993 ACM SIGMOD International Conference on Management of Data, volume 22 of SIGMOD '93, page 207--216. New York, NY, USA, ACM, (1993)
R. Lewick, and B. Bunker. Trust in organizations: Frontiers of theory and research, volume 1 of Trust in organizations: Frontiers of theory and research, Palgrave Macmillan, (1995)