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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/9283

Title: A model showing the increase in time of the average and median reference age and the decrease in time of the Price index
Authors: EGGHE, Leo
Issue Date: 2010
Citation: SCIENTOMETRICS, 82(2). p. 243-248
Abstract: This paper proves two regularities that where found in the paper [V. Larivière, E. Archambault and Y. Gingras (2007). Long-term patterns in the aging of the scientific literature, 1900-2004. Proceedings of ISSI 2007. CSIC, Madrid, Spain, 449-456, 2007]. The first is that the mean as well as the median reference age increases in time. The second is that the Price Index decreases in time. Using an exponential literature growth model we prove both regularities. Hence we show that the two results do not have a special informetric reason but that they are just a mathematical consequence of a widely accepted simple literature growth model.
Notes: [Egghe, L.] Univ Hasselt, B-3590 Diepenbeek, Belgium. [Egghe, L.] UA, B-2610 Antwerp, Belgium.
URI: http://hdl.handle.net/1942/9283
DOI: 10.1007/s11192-009-0057-3
ISI #: 000274111600003
ISSN: 0138-9130
Category: A1
Type: Journal Contribution
Validation: ecoom, 2011
Appears in Collections: Research publications

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