"In the Punjab the stylistic progression of the gold series from Kushan to Kidarite is clear: imitation staters were issued first in the name of Samudragupta, then by Kirada, 'Peroz' and finally Kidara" in Errington, Elizabeth· Curtis, Vesta Sarkhosh (2007). From Persepolis to the Punjab: Exploring Ancient Iran, Afghanistan and Pakistan (στα Αγγλικά). British Museum Press. σελ. 88. ISBN9780714111650.