von Schnurbein, Stefanie (November 2000). "The Function of Loki in Snorri Sturluson's "Edda"". History of Religions. 40 (2): 109–124. doi:10.1086/463618.
Hahn, Jürgen; Haug, Pat (1986). "Traces of Archaebacteria in ancient sediments". Systematic and Applied Microbiology. 7 (Archaebacteria '85 Proceedings): 178–83. doi:10.1016/S0723-2020(86)80002-9.