@article {501491,
	title = {Architected cellular ceramics with tailored stiffness via direct foam writing},
	journal = {PNAS},
	volume = {114},
	number = {8},
	year = {2017},
	pages = {1832-1837},
	author = {J. T. Muth and P. G. Dixon and L. Woish and L. J. Gibson and J. A. Lewis}
}
