HRDLIČKA, Aleš,
Josef HAVEL a Manuel VALIENTE. Detection of Rare Earth Elements by Post-Column Reaction with Xylenol Orange and Cetylpyridinium Bromide.
J. High Resolut. Chromatogr. Dr. Alfred Huethig Publishers, 1992, roč. 15, 1-12, s. 423-427. ISSN 0935-6304.