1. Beem, A. L. (1993).Segcurve: A program for fitting two-phase segmented curve models with an unknown change point [Program manual]. Leiden, The Netherlands: Leiden University, Centre for the Study of Education and Instruction.
2. Brown, R. L., Durbin, J., &Evans, J. M. (1975). Techniques for testing the constancy of regression relationships over time.Journal of the Royal Statistical Society: Series B,37, 149–163.
3. Buckley, M. J. (1991). Detecting a smooth signal: Optimality of cusum based procedures.Biometrika,78, 253–262.
4. Cooper, L. A. (1980). Spatial information processing: Strategies for research. In R. E. Snow, P.-A. Federico, & W. E. Montague (Eds.),Aptitude, learning, and instruction (Vol. 1, pp. 149–176). Hillsdale, NJ: Erlbaum.
5. Deshayes, J., &Picard, D. (1982). Tests of disorder of regression: Asymptotic comparison.Theory of Probability & Its Applications,27, 100–115.