Мнацаканов, Р. Г., В. О. Довбуш, and О. Є. Якобчук. “CHANGE OF STRUCTURE AND COMPOSITION OF SURFACE LAYERS OF CONTACT SURFACES”. Proceedings of National Aviation University, vol. 15, no. 4, Apr. 2021, pp. 63-66, doi:10.18372/2306-1472.15.15277.