| Al-Ani, Thair, Ferenc Molnár, Panu Lintinen, and Seppo Leinonen. (2018) "Geology and Mineralogy of Rare Earth Elements Deposits and Occurrences in Finland" Minerals 8, no. 8: 356. https://doi.org/10.3390/min8080356 tupa.gtk.fi (2016) http://tupa.gtk.fi/raportti/arkisto/m42_2010_69.pdf Thair Al-Ani! and Olli Sarapää (2013) REE-Rich Accessory Minerals in Carbonatitic, Alkaline, Appinitic and Metasomatichydrothermal Rocks, Central and Northern Finland. Geologian tutkimuskeskus, Tutkimusraportti 198 – Geological Survey of Finland, Report of Investigation 198, Pentti Hölttä (ed.) pp 17-21 |