Bjerknes, G., Bratteteig, T., & Espeseth, T. (1991). Evolution of finished computer systems: The dilemma of enhancement. Scandinavian Journal of Information Systems, 3, 25-45. Available from http://www.e-sjis.org/journal/volumes/volume03/articles/02_bjerknes_p25-45.pdf. (edit)

Argues that users should be able to maintain and redesign systems post implementation. The system should be architected with a view of continuous re-design by its users.