Дворук, В.І., К.В. Борак, and С.С. Добранський. 2015. “Improve the Wear Resistance of Structural Steel in Friction Slip into the Mass of Loose Abrasive by Electrical Discharge Machining”. Problems of Tribology 74 (4):91-95. https://tribology.khnu.km.ua/index.php/ProbTrib/article/view/413.