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Catalytic conversion of biomass-derived levulinic acid into γ-valerolactone using iridium nanoparticles supported on carbon nanotubes

https://doi.org/10.1016/s1872-2067(11)60522-6
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41/41 checkable references clean · checked 2026-07-22

Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.

7 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.

The 41 checked references that resolve
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The 7 references without a DOI — listed, not checked
no DOI — not checked10.1016/S1872-2067(11)60522-6_bib1
no DOI — not checked10.1016/S1872-2067(11)60522-6_bib3
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no DOI — not checkedFitzpatrick S W. US Patent 5608105. 1997
no DOI — not checked10.1016/S1872-2067(11)60522-6_bib32
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