Couzin J, Unger K. 2006. Scientific misconduct. Cleaning up the paper trial. Science 312:38-42

Using Thomson Scientific’s ISI Web of Knowledge and Google Scholar, Science found dozens of citations of retracted papers in fields from physics to cancer research to plant biology. Efforts to correct scientific literature are often uneven and chaotic. Like ghosts riffling the pages of journals, retracted papers live on and continue to be cited; sometimes their citations are “negative”, but scientists often do not know that the work they are citing has been retracted. The article gives many examples of retraction cases and comments of major editors and relevant scientists. [DOI: 10.1126/science.312.5770.38]