From a list of papers of an author, ranked in decreasing order of the number of citations to these papers one can calculate
this author’s Hirsch index (or h-index). If this is done for a group of authors (e.g. from the same institute) then we can
again list these authors in decreasing order of their h-indices and from this, one can calculate the h-index of (part of)
this institute. One can go even further by listing institutes in a country in decreasing order of their h-indices and calculate
again the h-index as described above. Such h-indices are called by Schubert  “successive” h-indices.
In this paper we present a model for such successive h-indices based on our existing theory on the distribution of the h-index
in Lotkaian informetrics. We show that, each step, involves the multiplication of the exponent of the previous h-index by
1/α where α > 1 is a Lotka exponent. We explain why, in general, successive h-indices are decreasing.
We also introduce a global h-index for which tables of individuals (authors, institutes,...) are merged.
We calculate successive and global h-indices for the (still active) D. De Solla Price awardees.