KadetsVladimir М., and Olesia O. Zavarzina. “Plasticity of the Unit Ball of $\ell_1$”. Visnyk of V. N. Karazin Kharkiv National University. Ser. Mathematics, Applied Mathematics and Mechanics 83 (September 23, 2016): 4-9. Accessed November 30, 2024. https://periodicals.karazin.ua/mech_math/article/view/8069.