Mamoun Sakkal describes a dome-dividing method in his thesis "[i]Geometry of muqarnas in Islamic architecture[/i]".[br]The thesis is available at [url=https://www.researchgate.net/publication/36343132_Geometry_of_muqarnas_in_Islamic_architecture]Researchgate[/url].[br]He has a [url=http://www.sakkal.com/]personal website[/url].[br]