Legenda
GERD:
Spesa pubblica interna lorda per ricerca e sviluppo (in inglese: Gross
Domestic expenditure on R&D)
Indice h: The h-index is an index that attempts to measure both the scientific productivity and the apparent scientific impact of a scientist. The index is based on the set of the scientist's most cited papers and the number of citations that they have received in other people's publications. The index can also be applied to the productivity and impact of a group of scientists, such as a department or university or country. The index was suggested by Jorge E. Hirsch, a physicist at UCSD, as a tool for determining theoretical physicists' relative quality[1] and is sometimes called the Hirsch index or Hirsch number. (http://en.wikipedia.org/wiki/H-index)