author = {C. Schneider},
title = {{Karr's Indefinite Summation Algorithm}},
language = {english},
year = {1999},
month = {8. March},
note = {Contributed talk at 43th Sem. Lothar. Combin},
conferencename = {43th Sem. Lothar. Combin},
url = {https://www.mat.univie.ac.at/~slc/}