| Johanson, Kristiina 2009. The Changing Meaning of ‘Thunderbolts’. Folklore. Electronic Journal of Folklore vol. 42. Editors Mare Kõiva, Andres Kuperjanov, Tõnno Jonuks. Folk Belief and Media Group of Estonian Literary Museum, Tartu. doi:10.7592/FEJF2009.42.johanson |
