Bohdan Novoselskyi. Forecasting the residual life of the elements of the drill string in difficult operating conditions. : Доктор філософії : spec.. 133 - Галузеве машинобудування : presented. 2026-06-25; popup.evolution: o; Ivano-Frankivsk National Technical University of Oil and Gas. – Івано-Франківськ, 0826U002478.

Updated: 2026-10-14