Stwertka 1998, str. 115 navodi da se identifikacija odigrala 1789. ali ne navodi kada je objavljena. Van der Krogt 2005. citira izvornu publikaciju, te navodi i godinu 1794., prema Gadolinu. Stwertka, Albert (1998). „Yttrium”. Guide to the Elements (Revised izd.). Oxford University Press. str. 115–116. ISBN0-19-508083-1.van der Krogt, Peter (2005-05-05). „39 Yttrium”. Elementymology & Elements Multidict. Pristupljeno 2008-08-06.Gadolin, Johan (1794). „Undersökning af en svart tung Stenart ifrån Ytterby Stenbrott i Roslagen”. Kongl. Vetenskaps Academiens Nya Handlingar15: 137–155.
Daane 1968, str. 817 Daane, A. H. (1968). „Yttrium”. u: Hampel, Clifford A.. The Encyclopedia of the Chemical Elements. New York: Reinhold Book Corporation. str. 810–821. LCCN68-29938.
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Nikolai B., Mikheev; Auerman, L N; Rumer, Igor A; Kamenskaya, Alla N; Kazakevich, M Z (1992). „The anomalous stabilisation of the oxidation state 2+ of lanthanides and actinides”. Russian Chemical Reviews61 (10): 990–998. Bibcode1992RuCRv..61..990M. DOI:10.1070/RC1992v061n10ABEH001011.
Pack, Andreas; Sara S. Russell, J. Michael G. Shelley and Mark van Zuilen (2007). „Geo- and cosmochemistry of the twin elements yttrium and holmium”. Geochimica et Cosmochimica Acta71 (18): 4592–4608. Bibcode2007GeCoA..71.4592P. DOI:10.1016/j.gca.2007.07.010.
Audi, Georges; Bersillon, O.; Blachot, J.; Wapstra, A.H. (2003). „The NUBASE Evaluation of Nuclear and Decay Properties”. Nuclear Physics A (Atomic Mass Data Center) 729: 3–128. Bibcode2003NuPhA.729....3A. DOI:10.1016/j.nuclphysa.2003.11.001.
Mosander, Carl Gustaf (1843). „Ueber die das Cerium begleitenden neuen Metalle Lathanium und Didymium, so wie über die mit der Yttererde vorkommen-den neuen Metalle Erbium und Terbium” (German). Annalen der Physik und Chemie60 (2): 297–315. Bibcode1843AnP...136..297M. DOI:10.1002/andp.18431361008.
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Daane 1968, str. 817 Daane, A. H. (1968). „Yttrium”. u: Hampel, Clifford A.. The Encyclopedia of the Chemical Elements. New York: Reinhold Book Corporation. str. 810–821. LCCN68-29938.
Daane 1968, str. 810 Daane, A. H. (1968). „Yttrium”. u: Hampel, Clifford A.. The Encyclopedia of the Chemical Elements. New York: Reinhold Book Corporation. str. 810–821. LCCN68-29938.
Daane 1968, str. 815 Daane, A. H. (1968). „Yttrium”. u: Hampel, Clifford A.. The Encyclopedia of the Chemical Elements. New York: Reinhold Book Corporation. str. 810–821. LCCN68-29938.
Daane 1968, str. 818 Daane, A. H. (1968). „Yttrium”. u: Hampel, Clifford A.. The Encyclopedia of the Chemical Elements. New York: Reinhold Book Corporation. str. 810–821. LCCN68-29938.
MacDonald, N. S.; Nusbaum, R. E. and Alexander, G. V. (1952). „The Skeletal Deposition of Yttrium” (PDF). Journal of Biological Chemistry195 (2): 837–841. PMID14946195. Arhivirano iz originala na datum 2009-03-26. Pristupljeno 2014-04-21.
Adams, Gregory P. et al. (2004). „A Single Treatment of Yttrium-90-labeled CHX-A–C6.5 Diabody Inhibits the Growth of Established Human Tumor Xenografts in Immunodeficient Mice”. Cancer Research64 (17): 6200–6206. DOI:10.1158/0008-5472.CAN-03-2382. PMID15342405.
Stwertka 1998, str. 115 navodi da se identifikacija odigrala 1789. ali ne navodi kada je objavljena. Van der Krogt 2005. citira izvornu publikaciju, te navodi i godinu 1794., prema Gadolinu. Stwertka, Albert (1998). „Yttrium”. Guide to the Elements (Revised izd.). Oxford University Press. str. 115–116. ISBN0-19-508083-1.van der Krogt, Peter (2005-05-05). „39 Yttrium”. Elementymology & Elements Multidict. Pristupljeno 2008-08-06.Gadolin, Johan (1794). „Undersökning af en svart tung Stenart ifrån Ytterby Stenbrott i Roslagen”. Kongl. Vetenskaps Academiens Nya Handlingar15: 137–155.
Van der Krogt 2005.van der Krogt, Peter (2005-05-05). „39 Yttrium”. Elementymology & Elements Multidict. Pristupljeno 2008-08-06.
Hammond, C. R.. „Yttrium” (pdf). The Elements. Fermi National Accelerator Laboratory. str. 4–33. ISBN0-04-910081-5. Arhivirano iz originala na datum 2008-06-26. Pristupljeno 2008-08-26.
NNDC contributors (2008). „Chart of Nuclides”. u: Alejandro A. Sonzogni (Database Manager). Upton, New York: National Nuclear Data Center, Brookhaven National Laboratory. Arhivirano iz originala na datum 2011-07-21. Pristupljeno 2008-09-13.
MacDonald, N. S.; Nusbaum, R. E. and Alexander, G. V. (1952). „The Skeletal Deposition of Yttrium” (PDF). Journal of Biological Chemistry195 (2): 837–841. PMID14946195. Arhivirano iz originala na datum 2009-03-26. Pristupljeno 2014-04-21.