Further investigations into the first-citation process: the case of population genetics
Bry Mohan Gupta, National Institute of Science, Technology and Development Studies, Dr. K.S. Krishnan Marg, New Delhi 110012, India, firstname.lastname@example.org
Ronald Rousseau, KHBO, Zeedijk 101, 8400 Oostende, Belgium; UIA, IBW, Universiteitsplein 1, 2610 Wilrijk, Belgium, email@example.com
LIBRES Volume 9, Issue 2 (September 1999)
In this article the first-citation process is investigated. Former studies led to two double exponential models for this process. The first model resulted in a concave function, the other one in a function with an inflection point (an S-shaped function). Real data using a year as time unit could best be described by the first model, data using two weeks as a unit could best be described by the second one. In this note we show that for a group of nine related data sets in the field of population genetics, using one year as a unit, the first observation is confirmed: the concave model can adequately describe such data.