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- J. Wu. Note on a paper by Bordellès, Dai, Heyman, Pan and Shparlinski. Periodica Mathematica Hungarica, 80(1):95-102, 2020.
- Z. Bahramian, A. Jabbari. On Lau-Loy's decomposition of a measure algebra on CHART groups. Periodica Mathematica Hungarica, 80(2):273-279, 2020.
- Kwok-Pun Ho. Martingale transforms and fractional integrals on rearrangement-invariant martingale Hardy spaces. Periodica Mathematica Hungarica, 81(2):159-173, 2020.
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- Mart Abel. S(B) of Segal topological algebras, revisited. Periodica Mathematica Hungarica, 81(2):201-216, 2020.
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