@inproceedings{bridges2006:551, author = {Sarhangi, Reza}, title = {An Introduction to Medieval Spherical Geometry for Artists and Artisans}, pages = {551--560}, booktitle = {Bridges London: Mathematics, Music, Art, Architecture, Culture}, year = {2006}, editor = {Sarhangi, Reza and Sharp, John}, isbn = {0-9665201-7-3}, issn = {1099-6702}, publisher = {Tarquin Publications}, address = {London}, url = {http://archive.bridgesmathart.org/2006/bridges2006-551.html} }