Frog, 'Shamans, Christians, and Things in Between: From Finnic-Germanic Contacts to the Conversion of Karelia', in Conversions: Looking for Ideological Change in the Early Middle Ages, ed. by Leszek Słupecki and Rudolf Simek, Studia Mediaevalia Septentrionalia, 23 (Vienna: Fassbaender, 2013), pp. 53–97, https://www.academia.edu/4049431 (at 57).
Frog, 'Shamans, Christians, and Things in Between: From Finnic-Germanic Contacts to the Conversion of Karelia', in Conversions: Looking for Ideological Change in the Early Middle Ages, ed. by Leszek Słupecki and Rudolf Simek, Studia Mediaevalia Septentrionalia, 23 (Vienna: Fassbaender, 2013), pp. 53–97, https://www.academia.edu/4049431 (esp. 61-67).
Frog, 'Shamans, Christians, and Things in Between: From Finnic-Germanic Contacts to the Conversion of Karelia', in Conversions: Looking for Ideological Change in the Early Middle Ages, ed. by Leszek Słupecki and Rudolf Simek, Studia Mediaevalia Septentrionalia, 23 (Vienna: Fassbaender, 2013), pp. 53–97, https://www.academia.edu/4049431 (at 75).