@incollection{
year={2014},
isbn={978-3-662-44521-1},
booktitle={Mathematical Foundations of Computer Science 2014},
volume={8634},
series={Lecture Notes in Computer Science},
editor={Csuhaj-Varjú, Erzsébet and Dietzfelbinger, Martin and Ésik, Zoltán},
doi={10.1007/978-3-662-44522-8_44},
title={A Pumping Lemma for Two-Way Finite Transducers},
url={http://dx.doi.org/10.1007/978-3-662-44522-8_44},
publisher={Springer Berlin Heidelberg},
author={Smith, Tim},
pages={523-534},
language={English}
}