@InProceedings{dison_et_al:LIPIcs.MFCS.2016.30,
author = {Dison, Will and Einstein, Eduard and Riley, Timothy R.},
title = {{Ackermannian Integer Compression and the Word Problem for Hydra Groups}},
booktitle = {41st International Symposium on Mathematical Foundations of Computer Science (MFCS 2016)},
pages = {30:1--30:14},
series = {Leibniz International Proceedings in Informatics (LIPIcs)},
ISBN = {978-3-95977-016-3},
ISSN = {1868-8969},
year = {2016},
volume = {58},
editor = {Faliszewski, Piotr and Muscholl, Anca and Niedermeier, Rolf},
publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
address = {Dagstuhl, Germany},
URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.MFCS.2016.30},
URN = {urn:nbn:de:0030-drops-64458},
doi = {10.4230/LIPIcs.MFCS.2016.30},
annote = {Keywords: Ackermann functions, hydra, word problem}
}