Ioannidis JPA. 2006. Concentration of the Most-Cited Papers in the Scientific Literature: Analysis of Journal Ecosystems. PLoS ONE. 2006; 1(1): e5. Published online 2006 December 20.
Despite a plethora of available journals, the most influential papers are extremely concentrated in few journals, especially in fields with high citation density. Existing multidisciplinary journals publish selectively most-cited papers from fields with high citation density. The paper reports and discusses on: journals publishing most-cited papers, diversity in specific fields, correlates of species (journal) diversity, concentration in multidisciplinary journals, original articles and reviews, extent of concentration of papers, citations, and most-cited papers.