@article{mort:lin109, author = {Chris Mortensen and Steve Leishman}, title = {Linear Algebra Representation of Necker Cubes I: The Crazy Crate}, journal = {The Australasian Journal of Logic}, year = 2009, volume = 7, pages = {1--9}, URL = {http://www.philosophy.unimelb.edu.au/ajl/2009/}, }