@ARTICLE{ShvaiPozharska2022JMathSci,
  title     = "On some approximation properties of {Gauss-Weierstrass} singular
               operators",
  author    = "Shvai, Olga and Pozharska, Kateryna",
  journal   = "J. Math. Sci.",
  publisher = "Springer Science and Business Media LLC",
  volume    =  260,
  number    =  5,
  pages     = "693--699",
  year      =  2022,
  doi =  {10.1007/s10958-022-05720-3},
}