Cherepŭt na choveka v mediko-antropologichen aspekt : forma, golemina i variabilnost - Kadanov, D. (Izd-vo na Bŭlgarskata akademija na naukite, 1984)
Titles on added t.p.: Cherep cheloveka v mediko-antropologicheskom aspekte; The human skull in a medico-anthropological aspect.
Summary in English and Russian.