1. The secular variation of skull characters in four series of Egyptian skulls;Barnard;Annals of Eugenics,1935
2. The Significance of Phylogenetic Classifications for Systematic and Evolutionary Biology
3. Wagner Trees in Theory & Practice
4. A review of classification (with discussion);Cormack;Journal of the Royal Statistical Society, Series A,1971
5. Consensus classification (special issue);Day;Journal of Classification,1986