Whitley, E. A., Poulymenakou, A., & Cornford, T.. (1991).
The Spring model for knowledge based systems analysis: A case study involving small and medium sized enterprises. (
J. Feinstein, Awad, E. M., Medsker, L., & Turban, E., Eds.)
Developing and managing expert system programs. Washington, DC: IEEE Computer Society Press. Retrieved from
IEEE1991.pdf