Sébastien Labbé. A Counterexample to a Question of Hof, Knill and Simon. Electr. J. Comb., 21(3):3, 2014. [doi]
@article{Labbe14,
title = {A Counterexample to a Question of Hof, Knill and Simon},
author = {Sébastien Labbé},
year = {2014},
url = {http://www.combinatorics.org/ojs/index.php/eljc/article/view/v21i3p11},
researchr = {https://researchr.org/publication/Labbe14},
cites = {0},
citedby = {0},
journal = {Electr. J. Comb.},
volume = {21},
number = {3},
pages = {3},
}