@article{DBLP:journals/siamcomp/TherienW01,
author = {Denis Th{\'e}rien and
Thomas Wilke},
title = {Temporal Logic and Semidirect Products: An Effective Characterization
of the Until Hierarchy},
journal = {SIAM J. Comput.},
volume = {31},
number = {3},
year = {2001},
pages = {777-798},
ee = {http://dx.doi.org/10.1137/S0097539797322772},
bibsource = {DBLP, http://dblp.uni-trier.de}
}