1.
Savchuk VV, Chaichenko SO. Best Approximations for the Cauchy Kernel on the Real Axis. Ukr. Mat. Zhurn. [Internet]. 2014Nov.25 [cited 2021Jan.26];66(11):1540–1549. Available from: http://umj.imath.kiev.ua/index.php/umj/article/view/2244