Reference health

Early identification of technological advances on the basis of patent data

https://doi.org/10.1007/bf02020708
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4/4 checkable references clean · checked 2026-08-03

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.

2 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 4 checked references that resolve
resolves10.1016/0048-7333(87)90027-8
Patents and the measurement of technological change: A survey of the literature
resolves10.1007/BF02020142
Patent statistics as indicators of innovative activities: Possibilities and problems
resolves10.1016/0048-7333(87)90028-X
Patents as indicators of corporate technological strength
resolves10.1016/0172-2190(87)90189-X
Patent analysis using online databases—I. Technological trend analysis
The 2 references without a DOI — listed, not checked
no DOI — not checkedK. Faust,Früherkennung technischer Entwicklungen auf der Basis von Patentdaten, Ifo studien zur strukturforschung 9/I, Ifo-Institut für Wirtschaftsforschung, München, 1987.
no DOI — not checkedK. Faust,Dynamische Felder der Technik im Licht der internationalen Patentaktivität, Ifo-Institut für Wirtschaftsforschung, München, 1989.
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 2026-08-03 — re-checked daily as this page is visited; titles and statuses come from Crossref and DataCite and are not part of the signed record

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