@inbook {2458,
	title = {Notes on an Epistemology for Living Things (1972) },
	booktitle = {Understanding Understanding: Essays on Cybernetics and Cognition},
	year = {2003},
	publisher = {Springer},
	organization = {Springer},
	address = {New York},
	author = {Von Foerster, Heinz}
}
@book {2459,
	title = {Observing Systems},
	year = {1982},
	publisher = {Intersystems Publications},
	organization = {Intersystems Publications},
	address = {Seaside},
	author = {Von Foerster, Heinz}
}
@article {2460,
	title = {On Constructing A Reality},
	journal = {Environmental Design Research},
	volume = {2},
	year = {1973},
	publisher = {Hutchinson \& Ross},
	address = {Stroudsburg, Dowden},
	author = {Von Foerster, Heinz},
	editor = {F. E. Preiser}
}
