O.N., P., D.I., V., V.A., K., G.V., S. and V.M., F. 2019. Luders Deformation Mechanisms on Yield Point in X80 Grade Pipeline with Ultrafine Structure. KnE Engineering. 4, 1 (Apr. 2019), 293–299. DOI:https://doi.org/10.18502/keg.v1i1.4423.