1. Russell WMS, Burch RL (1959) The Principles of Human Experimental Technique. Methuen, London
2. Smyth DH (1978) Alternatives to Animal Experiments. Scolar Press, London
3. Office of Technology Assessment (1988) Alternatives to Animal Use in Research, Testing and Education. Marcel Dekker, New York
4. National Research Council (1988) Use of Laboratory Animals in Biomedical and Behavioural Research. National Academy Press, Washington DC
5. Sprigge TLS (1989) The ethics of animal use in biomedicine This symposium