1. Adamson, T. M., Brodeckey, V., Lambert, T. F., Maloney, J. E., Ritchie, B. C. & WALKER, A. (1973) Foetal and Neonatal Physiology. Proceedings of Sir Joseph Barcroft Centenary Symposium. Cambridge University Press. p208
2. New surgical technique for studying placental transfer of drugs in vivo
3. Boyd, R. C. H., Haworth, C, Stacey, T. E. & Ward R. M. T. (1976) Journal of Physiology, London 256, 617-633
4. Dawes, G. S., Fox, H. E., Leduc, B. M., Liggins, G. C. & Richards, R. T. (1972) Journal of Physiology, London 220, 119-143