00637naa#a2200169#i#450# EN\\bibl\47267 20241129072211.5 2073-1574 20211118b2021####ek#y0engy0150####ca RU On problem of using copper electrodes to maintain protection against corrosion of steel hulls of ships and vessels Journal article Astrakhan Astrakhan State Technical University 2021 8 с. Journal article local Инженерное дело. Техника в целом. Транспорт. 62 Yastrebov Dmitry Pavlovich vestnik.astu.org