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.
9 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.
Identifying Age, Cohort and Period Effects in Scientific Research Productivity: Discussion and Illustration Using Simulated and Actual Data on French Physicists
The Age-Time-Cohort Problem and the Identification of Structural Parameters in Life-Cycle Models
The 9 references without a DOI — listed, not checked
no DOI — not checkedref15
no DOI — not checkedref16
no DOI — not checkedHierachies and the organization of knowledge in production
no DOI — not checkedref18
no DOI — not checkedref23
no DOI — not checkedEntry, Exit, Growth and Innovation over the Product Life Cycle
no DOI — not checkedref34
no DOI — not checkedEmployment and technological innovation: evidence from UK manufacturing firms
no DOI — not checkedGibrat's Legacy
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 2026-08-28 — 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.