Artym, V.I. et al. 2026. Influence of operating conditions on changes in mechanical properties of drill string steel elements. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number. 22(83) (Apr. 2026), 234–247. DOI:https://doi.org/10.31471/2304-7399-2026-22(83)-234-247.