Frančišković-Bilinski, Stanislav, Halka Bilinski, Darko Tibljaš, Darko Hanžel, and Alenka Mertelj. 2002. “Characterization of Sediments from Voglajna and Savinja Rivers - Preliminary Results”. Geologija 45 (2):367-72. https://doi.org/10.5474/geologija.2002.034.