@article {1393, title = {Through the Looking-Glass, and What the Quadratic Camera Found There}, journal = {The Mathematical Intelligencer}, volume = {34}, year = {2012}, month = {9/2012}, pages = {30 - 34}, issn = {0343-6993}, doi = {10.1007/s00283-012-9309-9}, author = {de Smit, Bart and McClure, Mark and Willem Jan Palenstijn and Sparling, E. Isaac and Wagon, Stan} }