Zitationen: Ax, P.; Willmann, R. 2016: Peter Ax (1927-2013) List of scientific Publications compiled by Peter Ax and Rainer Willmann. Peckiana, Görlitz 11, S. 1-5, B15:12374
Schmidt-Rhaesa, A. 2016: Peter Ax and the System of Metazoa. Peckiana, Görlitz 11, S. 21-33, B15:12374
Schmitt, M. 2016: Henning, Ax and Present-Day Mainstream Cladistics, on polarising characters. Peckiana, Görlitz 11, S. 35-42, B15:12374
Xylander, W. E. R. 2013: Prof. Dr. Peter Ax. Organism Diversity & Evolution, Jena 13, S. 665-667, B15:12350
Xylander, W. E. R. 2016: From the interstitial to phylogeny of the animal kingdom. Peckiana, Görlitz 11, S. 7-19, B15:12374