1. Hennig, G. J., Herr, W., Weber, E. & Xirotiris, H. L. Nature 292, 633–536 (1981).
2. Liritzis, Y. thesis, Edinburgh Univ. (1979).
3. Liritzis, Y. Anthropos 7, 215–249 (1980).
4. Liritzis, Y. & Galloway, R. B. (in preparation).
5. Schwarcz, H., Liritzis, Y. & Dixon, A. Anthropos 7, 152–173 (1980).