Davies, S. M.; Wohlfarth, B.; Wastegård, S.; Andersson, M.; Blockley, S.; Possnert, G. (2004). "Were there two Borrobol Tephras during the early Late-glacial period: implications for tephrochronology?". Quaternary Science Reviews. 23 (5–6): 581–589. Bibcode:2004QSRv...23..581D. doi:10.1016/j.quascirev.2003.11.006.
Davies, S. M.; Wohlfarth, B.; Wastegård, S.; Andersson, M.; Blockley, S.; Possnert, G. (2004). "Were there two Borrobol Tephras during the early Late-glacial period: implications for tephrochronology?". Quaternary Science Reviews. 23 (5–6): 581–589. Bibcode:2004QSRv...23..581D. doi:10.1016/j.quascirev.2003.11.006.