@article{DBLP:journals/jal/BabelPT96,
author = {Luitpold Babel and
Ilia N. Ponomarenko and
Gottfried Tinhofer},
title = {The Isomorphism Problem For Directed Path Graphs and For
Rooted Directed Path Graphs},
journal = {J. Algorithms},
volume = {21},
number = {3},
year = {1996},
pages = {542-564},
ee = {http://dx.doi.org/10.1006/jagm.1996.0058},
bibsource = {DBLP, http://dblp.uni-trier.de}
}
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