[1]
Persson, L.-E. et al. 2021. Some new resuts concering strong convergence of Fejér means with respect to Vilenkin systems.
Ukrains’kyi Matematychnyi Zhurnal
. 73, 4 (Apr. 2021), 544–555. DOI:
https://doi.org/10.37863/umzh.v73i4.226
.