Duriagina, Zoya     Modification of surfaces of special alloys by nitrogen for power engineering [Текст] / Zoya Duriagina, Tetiana Tepla // Ukrainian Journal of Mechanical Engineering and Materials Science / ed.-in-chief Oleksiy Lanets. — Lviv : Lviv Polytechnic Nat. Univ., 2015. — P. 99-104.