1. Vane, J. R., Nature, 230, 382 (1971).
2. Rudinger, J., Radioimmunoassay Methods (edit. by Kirkham, K. E., and Hunter, W. M.), 379 (Churchill Livingstone, Edinburgh, 1971).
3. Bangham, D. R., and Cotes, P. M., Radioimmunoassay Methods (edit. by Kirkham, K. E., and Hunter, W. M.), 345 (Churchill Livingstone, Edinburgh, 1971).
4. Freedlender, A., Radioimmunoassay Methods (edit. by Kirkham, K. E., and Hunter, W. M.), 387 (Churchill Livingstone, Edinburgh, 1971).
5. Nielsen, M. D., Radioimmunoassay Methods (edit. by Kirkham, K. E., and Hunter, W. M.), 388 (Churchill Livingstone, Edinburgh, 1971).