For citations:

Otoka A.G., Shlapak P.S. Experience of using magnetic powder and capillary methods of nondestructive testing in detecting defects of control objects in the oil industry. PROneft. Professionally about Oil. 2023;8(2):149-156. (In Russ.) https://doi.org/10.51890/2587-7399-2023-8-2-149-156