@techreport{RISC1348,author = {Roberto Pirastu},
title = {{On Combinatorial Identities:
Symbolic Summation and Umbral Calculus}},
language = {english},
number = {96-27},
year = {1996},
month = {December},
note = {PhD Thesis},
sponsor = {partially supported by the Commission of the European Communities in
the framework of the program ``Human Capital and Mobility'',
contract Nr. ERBCHBICT930501},
length = {0},
type = {RISC Report Series},
institution = {Research Institute for Symbolic Computation (RISC), Johannes Kepler University Linz},
address = {Altenberger Straße 69, 4040 Linz, Austria},
issn = {2791-4267 (online)}
}