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.
Hydrogen-rich gas from catalytic steam gasification of municipal solid waste (MSW): Influence of catalyst and temperature on yield and product composition
Four challenges for nickel steam-reforming catalysts
The 7 references without a DOI — listed, not checked
no DOI — not checkedEuropean Tire & Rubber Manufacturers’ Association. Annual Activity Report 2007−2008, 2008.
no DOI — not checkedScrap Tire Markets in the United States: 2007
no DOI — not checkedThe Japan Automobile Tire Manufacturers Association, Inc. Tire Industry of Japan, 2007.
no DOI — not checkedEuropean Tire & Rubber Manufacturers’ Association (ETRMA). ELTs Treatment Data in 2007, October 2008.
no DOI — not checkedCouncil Directive 1999/31/EC, Landfill of Waste; Official Journal of the European Communities, Brussels, Belgium, 1999; pL182.
no DOI — not checkedCouncil Directive 2000/53/EC, End-of-Life Vehicles; Official Journal of European Communities, Brussels, Belgium, 2000; pL269/34.
no DOI — not checkedref18/cit18
What this badge says. CiteStamped means the CHECKABLE references of this
work were clean at the dated check: each resolved to a known work in a public registry, and none
carried a retraction notice at that time. It says nothing about the quality, findings,
or importance of the work itself, and nothing about references deposited without a DOI.
checked 2026-07-25 — re-checked daily as this page is visited;
titles and statuses come from Crossref and DataCite and are not part of the signed record
Both snippets point at the live badge image and link back to this page. The
badge re-renders from the daily check, so an embed never goes stale by more than a day of visits.