@conference { 92,
	title = {Collective Construction of Environmentally-adaptive Structures},
	booktitle = {IEEE Conference on Intelligent Robots and Systems (IROS)},
	year = {2007},
	url = {files/ssr/files/iros07-jkwerfel.pdf},
	author = {Werfel, Justin and Donald Ingber and Radhika Nagpal}
}
