Anghel, Nicolae. On the constructibility with ruler and compass of a minimum chord in a parabola. [Berkeley, California]. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc177421/. Accessed December 5, 2016.
Note: Inconsistencies in capitalization and punctuation within the Digital Library may affect this citation. Before using this citation in formal writing, please consult your preferred style manual. More information.