Kozak, Lidia, Juliana Silva Souza, Adam Nawrot, Jędrzej Proch, Marcin Kaźmierski, Agnieszka Zawieja, and Przemysław Niedzielski. 2021. “Handheld ED-XRF Spectrometers in Geochemical Investigation: Comparative Studies for Glacial Deposits from Spitsbergen”. Polish Polar Research 42 (3):163–172. https://doi.org/10.24425/ppr.2021.137141.