@article{Goginava_2019, title={Strong summability of two-dimensional Vilenkin – Fourier series}, volume={71}, url={http://umj.imath.kiev.ua/index.php/umj/article/view/1443}, abstractNote={We study the exponential uniform strong summability of two-dimensional Vilenkin – Fourier series. In particular, it is
proved that the two-dimensional Vilenkin – Fourier series of a continuous function $f$ is uniformly strongly summable to a
function $f$ exponentially in the power 1/2. Moreover, it is proved that this result is best possible.}, number={3}, journal={Ukrains’kyi Matematychnyi Zhurnal}, author={GoginavaU.}, year={2019}, month={Mar.}, pages={340-352} }