@misc{RISC2897,
author = {C. Schneider},
title = {{Sigma - A package for multi-summation}},
language = {english},
year = {2006},
month = {April 27},
note = {Invited talk at Axiom Workshop 2006, RISC, Hagenberg, Austria},
conferencename = {Axiom Workshop 2006, RISC, Hagenberg, Austria},
url = {http://axiom-wiki.newsynthesis.org/WorkShopRISC2006}
}