Myleiko, G.L. and Solodkii, S.G. (2017) “Hyperbolic cross and complexity of various classes of linear ill-posed problems”, Ukrains’kyi Matematychnyi Zhurnal, 69(7), pp. 951–963. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/1748 (Accessed: 7 April 2025).