- Spiegel article (in German)
- Chronicle article on the extent of the fraud
- Chronicle article on how he managed to fool people
Stapel seems to have often offered colleagues "data" that fit their hypotheses, thus being listed as co-author. They now have to deal with the retractions.
Six young researchers were the whistleblowers in the case, apparently some tenured professors had felt something was wrong, but did not have the courage to act on their instincts.