Mathematical modeling of the supercooled steel ingot formation. Problem statement Julia Bazdyreva, Vyacheslav Bilousov, Fedor Nedopekin, Vitaliy Bondarenko, Viktor Bodriaha and Alexey Kukharev Eur. Phys. J. Special Topics, 229 2-3 (2020) 495-500 Published online: 11 February 2020 DOI: 10.1140/epjst/e2019-900108-6