@article {MR2666388,
	title = {More variations on the Sierpinski sieve},
	journal = {Canad. J. Math.},
	volume = {62},
	year = {2010},
	pages = {543{\textendash}562},
	issn = {0008-414X},
	doi = {10.4153/CJM-2010-036-3},
	url = {http://dx.doi.org/10.4153/CJM-2010-036-3},
	author = {Hare, Kevin G.}
}
