@phdthesis{RISC4320,
author = {Burcin Erocal},
title = {{Algebraic extensions for summation in finite terms}},
language = {english},
year = {2011},
month = {February},
translation = {0},
school = {RISC, Johannes Kepler University, Linz},
keywords = {symbolic summation, difference rings, Karr's algorithm, algebraic extensions},
length = {70}
}