Pańczyk, M., Bazarnik, J., Giro, L., Nawrocki, J. and Krzemińska, E. 2015. Application of handheld XRF spectrometers for estimation of Rare Earth Elements content in alkaline intrusions from the East European Craton (NE Poland) – preliminary results. Geology, Geophysics and Environment. 41, 1 (Aug. 2015), 120. DOI:https://doi.org/10.7494/geol.2015.41.1.120.