Hostages in the Baltic Crusades, Wars of Conquest and Cultural Exchange during the 12th and 13th Centuries
Kaljusaar, Kristjan. (2015). Hostages in the Baltic Crusades, Wars of Conquest and Cultural Exchange during the 12th and 13th Centuries. (EST: Pantvangid ning Läänemere ristiretked, vallutussõjad ja kultuurivahetus 12.-13. sajandil). Master thesis. Supervisor: Anti Selart. University of Tartu, Faculty of Philosophy, Institute of History and Archaeology.
Read the thesis (ENG summary on p. 111-1115): here.