PROKHOROV, ANDREI V. “ON THE QUESTION OF EMERGENCE OF THE PROTO-STATE AUTHORITY - THE INSTITUTION OF THE MILITARY WARCHIEF”. Gosudarstvennaya Sluzhba, vol. 20, no. 6, Nov. 2018, pp. 52-58, https://doi.org/10.22394/2070-8378-2018-20-6-52-58.