Strzygowski 1918, p. 92. Strzygowski, Josef (1918). Die Baukunst der Armenier und Europa [The Architecture of the Armenians and of Europe] Volume I (ภาษาเยอรมัน). Vienna: Kunstverlag Anton Schroll & Co. pp. 92–94.
Hunt, Lucy-Anne (2008). "Eastern Christian Iconographic and Architectural Traditions: Oriental Orthodox". ใน Parry, Ken (บ.ก.). The Blackwell Companion to Eastern Christianity. John Wiley & Sons. p. 394. ...was influential in Armenia and early imitations of it are found in Georgia...