| G.B. Desoer |
Middelnederlandse Handschriften in Oost-Europa, by Robrecht Lievens |
|
39/1, p. 68 |
| Steven Runciman |
The Northern Crusades: the Baltic and the Catholic Frontier, 1100-1525, by Eric Christiansen |
|
51/1, p. 120 |
| ANDREW KAHN |
Simon Franklin, Society and Culture in Early Rus, c.950-1300 |
|
72/1, p. 177 |