The results of TXRF round-robin test of mammalian tissue samples / Karolina OLBRICH, Aldona Kubala-Kukuś, Eva Marguí, Ramón Fernández-Ruiz, Katarzyna MATUSIAK, Jolanta Wudarczyk-Mocko, Paweł WRÓBEL, Zuzanna Setkowicz, Joanna CHWIEJ // W: TXRF 2023 : 19\textsuperscript{th} international conference on Total Reflection X-ray Fluorescence analysis and related methods : September 5\textsuperscript{th} - 8\textsuperscript{th}, 2023, Clausthal, Germany : program and book of abstracts / ed. Joanna Kolny-Olesiak. — Clausthal-Zellerfeld : Papierflieger Verlag, 2023. — ISBN: 978-3-86948-937-7. — S. 4