Kaliuzhnyi A, Kaliuzhnyi V, Levchenko V. Hole flanging at the bottom of the hollow semi-finished product after deep drawing. Materials working by pressure [Internet]. 2024Dec.2 [cited 2025Aug.27];(1(53):80-7. Available from: http://omd.dgma.donetsk.ua/index.php/main/article/view/241