@book{ Solr-90349, title = {The complete book of fun maths : 250 confidence-boosting tricks, tests, and puzzles}, series = {IQ workout series}, author = {Carter, Philip J., 1944-}, address = {Chichester}, publisher = {Wiley}, year = {2004}, url = {http://www.loc.gov/catdir/description/wiley041/2004000227.html} }