@article{Garijo_2011,
title={Distinguishing graphs by their left and right homomorphism profiles},
volume={32},
ISSN={0195-6698},
url={http://dx.doi.org/10.1016/j.ejc.2011.03.012},
DOI={10.1016/j.ejc.2011.03.012},
number={7},
journal={European Journal of Combinatorics},
publisher={Elsevier BV},
author={Garijo,
Delia and Goodall,
Andrew and Nešetřil,
Jaroslav},
year={2011},
month=oct,
pages={1025–1053} }