Analysis of information sources in references of the Wikipedia article "Tungsten" in English language version.
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: CS1 maint: publisher location (link){{cite book}}
: CS1 maint: DOI inactive as of November 2024 (link) also reported in Astrid Sigel; Helmut Sigel (2002). Molybdenum and tungsten: their roles in biological processes. CRC Press. p. 741 ff. ISBN 978-0-8247-0765-1.{{cite book}}
: CS1 maint: DOI inactive as of November 2024 (link) also reported in Astrid Sigel; Helmut Sigel (2002). Molybdenum and tungsten: their roles in biological processes. CRC Press. p. 741 ff. ISBN 978-0-8247-0765-1.{{cite book}}
: CS1 maint: DOI inactive as of November 2024 (link) also reported in Astrid Sigel; Helmut Sigel (2002). Molybdenum and tungsten: their roles in biological processes. CRC Press. p. 741 ff. ISBN 978-0-8247-0765-1.