Goodwin, G. M., Cowen, P. J., Fairburn, C. G., Parry-Billings, M., Calder, P. C., & Newsholme, E. A. (1990). Plasma concentrations of tryptophan and dieting.

Goodwin, G M., P J. Cowen, C G. Fairburn, M. Parry-Billings, P C. Calder, und E A. Newsholme. Plasma Concentrations of Tryptophan and Dieting. 1990.

Goodwin, G M., et al. Plasma Concentrations of Tryptophan and Dieting. 1990.