Vladimirov A.P. Drukarenko N.A. Myznov K.E. Using Speckle Images for Determining the Local Plastic Strains Arising at High-Cycle Fatigue of 09G2S Steel // Technical Physics Letters. 2021. Vol. 47. No. 8. P. 773–776. DOI: 10.1134/S1063785021080137.