• Matrix transforms into the subsets of Maddox spaces defined by speedNatarajan, Pinnangudi N.; Aasma, AntsWSEAS transactions on mathematics2025 / p. 82-89 https://doi.org/10.37394/23206.2025.24.11
• Some classes of matrix transforms connected with subspaces of Maddox spaces defined by speeds of convergenceNatarajan, Pinnangudi N.; Aasma, AntsFilomat2024 / p. 8039-8046 https://doi.org/10.2298/FIL2423039N https://www.pmf.ni.ac.rs/filomat-content/2024/38-23/38-23-3-24287.pdf https://www.scopus.com/sourceid/19900192450 https://www.scopus.com/pages/publications/85213060423?inward https://jcr.clarivate.com/jcr-jp/journal-profile?journal=FILOMAT&year=2024 https://www.webofscience.com/wos/woscc/full-record/WOS:001380391800001
• Some more results on matrix transform between speed-Maddox spaces over ultrametric fieldsNatarajan, Pinnangudi N.; Aasma, AntsWSEAS transactions on mathematics2025 / p. 542-550 https://doi.org/10.37394/23206.2025.24.54