FARROKH K, KARAMIAN G, KARAMIAN H. Military Architecture and the Four-Spāhbed System for Defense of the Sasanian Empire (224-651 CE). historiaswiat [Internet]. 2021 Sep. 3 [cited 2024 Nov. 24];10:117-51. Available from: https://czasopisma.uph.edu.pl/historiaswiat/article/view/2553