@article {MR3091514,
	title = {Extremal sequences of polynomial complexity},
	journal = {Math. Proc. Cambridge Philos. Soc.},
	volume = {155},
	year = {2013},
	pages = {191{\textendash}205},
	issn = {0305-0041},
	doi = {10.1017/S0305004113000157},
	url = {http://dx.doi.org/10.1017/S0305004113000157},
	author = {Kevin G. Hare and Ian D. Morris and Nikita Sidorov}
}
