1. (1940) Die Erbanlagen der Papillarmuster. In Handbuch der Erbbiologie des Menchen, Vol. 3. Berlin: Springer, pp. 407-440.
2. The Deltadiagram : A New Graphical Method for the Study of Racial Dermatoglyphics
3. Finger Print Indices-A Critique
4. DERMATOGLYPHIC ANALYSIS AS A DIAGNOSTIC TOOL
5. (1971) Formation of the Bulgarian People. Sofia: Naouka i Izkoustvo (in Bulgarian).