E. Leo, Theory and practise of the g-index, Scientometrics, vol.69, issue.1, pp.131-152, 2006.

G. Wolfgang, On the H-index: A mathematical approach to a new measure of publication activity and citation impact, Scientometrics, vol.67, issue.2, pp.315-321, 2006.

H. Jorge and E. , An index to quantify an individual's scientific output, Proceedings of the National Academy of Science, pp.16569-16572, 2005.

U. Heinrich, W. , and M. Zimmer, WHO is the " Platz-Hirsch " of the German Economics profession? A citation analysis, Working Paper, vol.39, 2006.