Bry Mohan Gupta
National Institute of Science, Technology and Development Studies
Dr. K.S. Krishnan Marg, New Delhi 110012, India
E-mail: bmg@csnistad.ren.nic.in
Ronald Rousseau
KHBO, Zeedijk 101, 8400 Oostende, Belgium, and
UIA, IBW, Universiteitsplein 1, 2610 Wilrijk, Belgium
E-mail: ronald.rousseau@kh.khbo.be
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.
https://doi.org/10.32655/LIBRES.1999.2