Babak, Vitalii, and Viatcheslav Stadnychenko. “Application of Revitalisants for Extension of Resource and Restoring worn‐out Friction Units of Aviation Axial ‐ Piston Hydromachines”. Aviation 8, no. 1 (March 31, 2004): 8-12. Accessed November 25, 2024. https://jau.vgtu.lt/index.php/Aviation/article/view/7427.