1. Baek, S., Kim, H., and Shin, D. (2002). “OD matrix estimation using link use proportion sample data as additional information.” The Journal of Korean Society of Transportation, Vol. 20, No. 4, pp. 83–93.
2. Baek, S., Jung, S., Kim, H., and Choi, K. (2008) “A methodology for expanding sample OD based on probe vehicle.” The Journal of Korean Society of Transportation, Vol. 26, No. 2, pp. 135–145
3. Bazaraa, M., Sherali, H. D., and Shetty, C. M. (2006) Nonlinear programming, theory and algorithms, 3rd ed., Wiley.
4. Bell, M. G. H. (1991). “The estimation OD matrices constrained generalized least squares.” Transportation Research 25B, pp. 13–22.
5. Cascetta, E. (1984). “Estimation of trip matrices from traffic counts and survey and data: Generalized least squares estimator.” Transportation Research 18B, pp. 289–299.