Seber, G. A. F., Wild, C. J. 1., Wild C.J., Wild, C. J., Wild, C. J., & Wild, C. J. 1. (1989). Nonlinear regression. New York: Wiley.

Seber, G. A. F., C. J 1952- Wild, Wild C.J, Christopher John Wild, C. J. Wild, and C. J. 1952- Wild. Nonlinear Regression. New York: Wiley, 1989.

Seber, G. A. F., et al. Nonlinear Regression. New York: Wiley, 1989.