RT Journal Article SR Electronic T1 Measuring Academic Output: The H-Index JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A1888 A1 M. Castillo YR 2009 UL http://www.ajnr.org/content/early/2009/12/10/ajnr.A1888.abstract AB