4. група хемијских елемената (Serbian Wikipedia)

Analysis of information sources in references of the Wikipedia article "4. група хемијских елемената" in Serbian language version.

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doi.org

  • van Arkel, A. E.; de Boer, J. H. (1925). „Darstellung von reinem Titanium-, Zirkonium-, Hafnium- und Thoriummetall (Production of pure titanium, zirconium, hafnium and Thorium metal)”. Zeitschrift für anorganische und allgemeine Chemie (на језику: German). 148 (1): 345—350. doi:10.1002/zaac.19251480133. 

lanl.gov

periodic.lanl.gov

web.archive.org