1. Über Störungen der Papillarmuster;Abel;Z. Morphol. Anthropol.,1936
2. Kritische studien über die entwicklung der papillarmuster auf den fingerbeeren;Abel;Z. Mensch. Vererb. Kons,1938
3. Babler, W., 1977. The prenatal origins of populational differences in human dermatoglyphics. Ph.D. Thesis, University of Michigan.
4. Babler, W., 1991. Embryologic development of epidermal ridges and their configurations. In: Plato, C., Garruto, R., Schaumann, B. (Eds.), Dermatoglyphics: Science in Transition. Wiley-Liss, Inc.
5. Bentil, D., 1990. Aspects of dynamic pattern generation in embryology and epidemiology. Ph.D. Thesis, Wolfson College, Oxford.