Liu, Joan Q.; Rousseau, Ronald; Wang, Mona S.; Ye, Fred Y. - In: Journal of Informetrics 7 (2013) 1, pp. 190-197
Five ratios RH, RT, SH, ST and SZ derived from the three-part division of a set of sources in h-core, h-tail and uncited sources are defined. Dynamic changes in the three independent ratios RH, SH and SZ are studied for six selected topics. Data about these topics are obtained from the Web of...