As with Ottoman mosques, several churches based on the Hagia Sophia include four semi-domes rather than two, such as the Church of Saint Sava in Belgrade.Ljubomir Milanović 2001: Materializing Authority: The Church of Saint Sava in Belgrade and its Architectural Significance. Serbian Studies: Journal of the North American Society for Serbian Studies, Volume 24, Numbers 1-2: 63-81 (PDF) Tanja Damnjanović 2005: "Fighting" the St. Sava: Public Reaction to the Competition for the Largest Cathedral in Belgrade. Centropa, 5 (2), 125–135. The Catedral Metropolitana Ortodoxa in São Paulo and the Église du Saint-Esprit (Paris) both replace the two large tympanums beneath the main dome with two shallow semi-domes. The Église du Saint-Esprit is two thirds the size of the Hagia Sophia.
As with Ottoman mosques, several churches based on the Hagia Sophia include four semi-domes rather than two, such as the Church of Saint Sava in Belgrade.Ljubomir Milanović 2001: Materializing Authority: The Church of Saint Sava in Belgrade and its Architectural Significance. Serbian Studies: Journal of the North American Society for Serbian Studies, Volume 24, Numbers 1-2: 63-81 (PDF) Tanja Damnjanović 2005: "Fighting" the St. Sava: Public Reaction to the Competition for the Largest Cathedral in Belgrade. Centropa, 5 (2), 125–135. The Catedral Metropolitana Ortodoxa in São Paulo and the Église du Saint-Esprit (Paris) both replace the two large tympanums beneath the main dome with two shallow semi-domes. The Église du Saint-Esprit is two thirds the size of the Hagia Sophia.