8Akkermans, H. and K. V. Helden, 2002, "Vicious and Virtu- ous Cycles in ERP Implementation: A Case Study of Interrelations Be-tween Critical Success Factors", European Journal of Information Sys- tems, Vol. 11, pp.35-36.
9Benbasat, I. and R. W. Zmud, 2003, "The Identity Crisis within the Is Discipline: Defining and Communicating the Discipllne's Core Properties", MIS Quarterly, Vol. 27, N. 2, pp.183-194.
10Charnmz, K., 2006, Constructing Grounded Theory: A Practi- cal Guide Through Qualitative Analysis, Chemmai: Sage.
