author = { J.P. Bell and S. Gerhold},
title = {{ On the Positivity Set of a Linear Recurrence Sequence.}},
language = {english},
journal = {Israel J. Math.},
volume = {157},
pages = {333--345},
isbn_issn = {'ISSN' 0021-2172},
year = {2007},
refereed = {yes},
length = {13}