Sitar, T., Popowicz, G. M., Siwanowicz, I., Huber, R., & Holak, T. A. (2006). Structural basis for the inhibition of insulin-like growth factors by insulin-like growth factor-binding proteins. National Academy of Sciences.

Sitar, Tomasz, Grzegorz M. Popowicz, Igor Siwanowicz, Robert Huber, and Tad A. Holak. Structural Basis for the Inhibition of Insulin-like Growth Factors By Insulin-like Growth Factor-binding Proteins. National Academy of Sciences, 2006.

Sitar, Tomasz, et al. Structural Basis for the Inhibition of Insulin-like Growth Factors By Insulin-like Growth Factor-binding Proteins. National Academy of Sciences, 2006.