Decomposition mechanism of xydroxyfluorapatite in phosphoric acid-thermal treatmentPõldme, Meeme; Raude, Urmas; Aruväli, J.; Utsal, K.Phosphorus, sulfur and silicon and the related elements1990 / p. 441 Investigation of phase transformations in thermal processing of phosphate rockPõldme, Meeme; Utsal, K.; Aruväli, J.; Arnold, M.; Paulik, F.Journal of thermal analysis1990 / 5, p. 1699-1705: ill Peat-derived carbon-based non-platinum group metal type catalyst for oxygen reduction and evolution reactionsTeppor, Patrick; Jäger, Rutha; Paalo, Madis; Palm, R.; Volobujeva, Olga; Härk, E.; Kochovski, Z.; Romann, Tavo; Härmas, R.; Aruväli, J.; Kikas, A.; Lust, EnnGSFMT Scientific Conference 2020 : Tallinn, February 4-5, 2020 : abstracts2020 / p. 81 http://fmtdk.ut.ee/wp-content/uploads/2020/01/GSFMT2020.pdf