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.
Pore Structure in Coal: Pore Evolution after Cryogenic Freezing with Cyclic Liquid Nitrogen Injection and Its Implication on Coalbed Methane Extraction
Experimental investigation on the characteristics of fractures initiation and propagation for gas fracturing by using air as fracturing fluid under true triaxial stresses
Quasi-steady problems in freezing soils: I. Analysis on the steady growth of an ice layer
The 7 references without a DOI — listed, not checked
no DOI — not checkedCryogenic nitrogen as a hydraulic fracturing fluid in the Devonian Shale
no DOI — not checkedIdentification and determination of the thermophysical properties of coal at lower temperature
no DOI — not checkedExperimental analysis of thermal conductivity of different ranks of coal
no DOI — not checkedInfluence of testing temperature range on average coefficient of linear expansion of epoxy resins
no DOI — not checked10.1016/j.applthermaleng.2021.116988_b0185
no DOI — not checkedResearch on effective elastic mechanical properties of medium rank coal
no DOI — not checkedLow-temperature crack resistance of warm-mixed crumb rubber asphalt mortar under aging effect based on DIC technology
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 2026-07-23 — 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.