Kudelia, Serhiy (4 Mei 2018). "Presidential activism and government termination in dual-executive Ukraine". Post-Soviet Affairs (dalam bahasa Inggeris). 34 (4): 246–261. doi:10.1080/1060586X.2018.1465251. S2CID158492144.
Kudelia, Serhiy (4 Mei 2018). "Presidential activism and government termination in dual-executive Ukraine". Post-Soviet Affairs (dalam bahasa Inggeris). 34 (4): 246–261. doi:10.1080/1060586X.2018.1465251. S2CID158492144.