Edward Dąbrowa, “Kingship ii. Parthian Period,” Encyclopædia Iranica, online edition, 2016, available at http://www.iranicaonline.org/articles/kingship-02-parthian-period (accessed on 25 July 2016).
Parthian kingship started with the Arsacids monarchy and was an original form of Oriental kingship. The royal ideology was created by combining elements of different provenance; Greek elements were systematically removed or relegated to be replaced by Iranian traditions.