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.
21 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 21 references without a DOI — listed, not checked
no DOI — not checkedref1
no DOI — not checkedref7
no DOI — not checkedref8
no DOI — not checkedref10
no DOI — not checkedref11
no DOI — not checkedA Review of research on cost of quality models and best practices
no DOI — not checkedApplying Cost of Quality to a Service Business
no DOI — not checkedMeasuring and reporting the cost of quality
no DOI — not checkedDetermining optional quality costs by considering costs of lost sales
no DOI — not checkedref19
no DOI — not checkedref20
no DOI — not checkedref21
no DOI — not checkedSix Sigma Business Scorecard: Creating a Comprehensive Corporate Performance Measurement System
no DOI — not checkedref23
no DOI — not checkedref26
no DOI — not checkedref27
no DOI — not checkedref28
no DOI — not checkedref30
no DOI — not checkedref31
no DOI — not checkedref32
no DOI — not checkedIncreasing value through the measurement of the cost of quality (CoQ) -A practical approach
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.