John Rawlings Rawling, J. O., Pantula, S. G., & Dickey, D. A. (1998). Applied regression analysis: A research tool. New York: Springer. Kang, G., & Rawlings, J. O. (1998). Marginal curvatures for functions of parameters in nonlinear regression. Statistica Sinica, 8(2), 467–476. SHYMODJESKA, J. S., RIVIERE, J. E., & RAWLINGS, J. O. (1984). APPLICATION OF BIPLOT METHODS TO THE MULTIVARIATE-ANALYSIS OF TOXICOLOGICAL AND PHARMACOKINETIC DATA. TOXICOLOGY AND APPLIED PHARMACOLOGY, 72(1), 91–101. https://doi.org/10.1016/0041-008X(84)90252-7