O. VovkBooksVydanni︠a︡ Holovnoho Komanduvanni︠a︡ UPAVolynʹ, Polissi︠a︡, Podilli︠a︡Borotʹba proty UPA i nat︠s︡ionalistychnoho pidpilli︠a︡Critical Infrastructure Protection in Response to Terrorist AttacksAuthor data: Open Library