URL
http://vbrant.eu/sites/vbrant.eu/files/20131122%20understanding_societal_impact_ResearchEvaluation.pdf
http://vbrant.eu/sites/vbrant.eu/files/20131118%20citations_measure_impact_e-infra_0.pdf
http://vbrant.eu/sites/vbrant.eu/files/Paper%20Taxonomic%20infrastructures%20Koerten%20and%20van%20den%20Besselaar_0.pdf
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0050943
http://dx.doi.org/10.3897/zookeys.150.2164