1.
Babenko VF, Leskevich TY. Approximation of some classes of functions of many variables by harmonic splines. Ukr. Mat. Zhurn. [Internet]. 2012Aug.25 [cited 2024Apr.19];64(8):1011-24. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/2636