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Timeline of Informetrics

1984: Abraham Bookstein’s heuristic argument for the ubiquity of
Lotka’s law (Bookstein, 1984, 1990).
1985: Miranda Pao published a fitting procedure for Lotka’s law based
on ordinary least-squares (Pao, 1985).
1985: First study of citer motivations: Brooks (1985).
1985 1990: Leo Egghe proves formally the mathematical equivalence
of the bibliometric laws (Egghe, 1985, 1990, 2005).
1987: Paul Nicholls proposes a fitting procedure for Lotka’s law using
a maximum likelihood approach (Nicholls, 1987).
1987: First International Conference on bibliometrics and infor-
metrics, held in Diepenbeek (Belgium) (later known as the ISSI
conferences) (Egghe & Rousseau, 1988).
1988: First Science & Technology Indicators (STI) Conference (the
“Leiden” conferences).
1988 1992: First regional large-scale citation indexes (China).
1995: Henry Etzkowitz & Loet Leydesdorff (1995) propose the term
Triple Helix to study University-Government-Industry relations.
1997: Tomas Almind and Peter Ingwersen introduce the term web(o)
metrics (Almind & Ingwersen, 1997).
1997: Ronald Rousseau shows that inlinks on the Internet follow a
power law (small sample) (Rousseau, 1997b).
1998: Sergey Brin and Lawrence Page introduce PageRank (Brin &
Page, 1998).
1999: Inlinks on the Internet follow a power law (large-scale investiga-
tion) (Faloutsos et al., 1999).
1999: Albert-La ´szlo ´ Baraba ´si and Re ´ka Albert introduce the term pref-
erential attachment (for what was already known as cumulative advan-
tage, success-breeds-success or the Yule process).
2004: Elsevier launches Scopus.
2004: Google Scholar becomes available.
2005: First global Map of Science at the journal level by Boyack,
Klavans, and Bo ¨rner (2005).
2005: Jorge Hirsch defines the h-index (Hirsch, 2005).
2005: Thomson Reuters launches the Century of Science database
which includes publications and citations since the year 1900.
2006: Leo Egghe defines the g-index (Egghe, 2006a,b,c).
2007: Journal of Informetrics founded by Elsevier with Leo Egghe as first
Editor-in-Chief.