• Absolute convergence with speed and matrix transformsAasma, Ants; Natarajan, Pinnangudi N.TWMS Journal of applied and engineering mathematics2024 / p. 1109-1120 https://jaem.isikun.edu.tr/web/index.php/archive/125-vol14no3/1241-absolute-convergence-with-speed-and-matrix-transforms
• Matrix transforms between subspaces of summability domains of matrices determined by speed of convergenceAasma, Ants; Natarajan, Pinnangudi N.Indian Journal of Mathematics2023 / p. 323-341 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85185908862&partnerID=40&md5=68a63c99a7ea221800fbd95b5e6b032b https://www.scopus.com/sourceid/21100235837 https://www.scopus.com/record/display.uri?eid=2-s2.0-85185908862&origin=inward&txGid=503cb24f2c35d55587dc125c629101ba
• Matrix transforms by factorable matricesAasma, AntsJournal of advances in applied & computational mathematics2018 / p. 1-11 http://dx.doi.org/10.15377/2409-5761.2018.05.1
• Matrix transforms into the set of a-absolutely convergent sequences with speed and the regularity of matrices on the sub-spaces of CAasma, Ants; Natarajan, Pinnangudi N.WSEAS transactions on mathematics2024 / p. 60-67 https://doi.org/10.37394/23206.2024.23.7
• Matrix transforms into the speed-Maddox spaces over ultrametric fieldsNatarajan, Pinnangudi; Aasma, AntsAnalele Stiintifice ale Universitatii Al I Cuza din Iasi - Matematica2025 / p. 71-79 https://doi.org/10.47743/anstim.2025.00006 https://www.math.uaic.ro/~annalsmath/pdf-uri_anale/F1(2025)/6%20F1%202025.pdf
• 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
• Matrix transforms of subspaces of summability domains of matrices defined by speed of convergenceAasma, Ants; Natarajan, Pinnangudi N.Filomat2023 / p. 10209-10218 https://journal.pmf.ni.ac.rs/filomat/index.php/filomat/article/view/21559 https://doi.org/10.2298/FIL2330209A https://www.scopus.com/sourceid/19900192450 https://www.scopus.com/record/display.uri?eid=2-s2.0-85196651281&origin=inward&txGid=cd8568240e33cf7106b0c9fd23672624 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=FILOMAT&year=2023 https://www.webofscience.com/wos/woscc/full-record/WOS:001102103400001
• Matrix transforms of subspaces of summability domains of normal matrices determined by speedAasma, Ants; Natarajan, Pinnangudi N.Facta Universitatis, Series : Mathematics and Informatics2022 / p. 773-782 http://casopisi.junis.ni.ac.rs/index.php/FUMathInf/article/view/10761
• Matrix transforms of summability domains of normal series-to-series matricesAasma, AntsJournal of advances in applied & computational mathematics2014 / p. 35-39
• Matrix transforms of summability domains of Zweier methodAasma, AntsJournal of advances in applied & computational mathematics2018 / p. 12-15 http://dx.doi.org/10.15377/2409-5761.2018.05.2
• Matrix transforms of the set of α-absolutely convergent sequences with speedAasma, Ants; Natarajan, Pinnangudi N.Serdica mathematical journal2024 / p. 137-150 https://doi.org/10.55630/serdica.2024.50.137-150
• Matrix transforms of α -absolutely Aλ -summable sequencesAasma, Ants; Natarajan, Pinnangudi N.WSEAS transactions on mathematics2024 / p. 836-847 https://doi.org/10.37394/23206.2024.23.92
• Matrix transforms of λ-boundedness domains of the Zweier methodAasma, Ants; Dutta, HemenTWMS Journal of applied and engineering mathematics2020 / p. 28-37 https://jaem.isikun.edu.tr/web/images/articles/vol.10-Special_Issue/04.pdf https://jaem.isikun.edu.tr/web/index.php/archive/107-vol10-special-issue/582-matrix-transforms-of-boundedness-domains-of-the-zweier-method https://www.scopus.com/sourceid/21100870373 https://www.scopus.com/record/display.uri?eid=2-s2.0-85090342159&origin=inward&txGid=b5d8b2dce5067a6d9ed9d48d2b292820 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=TWMS%20J%20APPL%20ENG%20MATH&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000565183100005
• Some Classes of Matrix Transformations between the Subsets of Maddox Spaces Defined by SpeedAasma, Ants; Natarajan, Pinnangudi N.WSEAS transactions on systems2024 / p. 508-516 https://doi.org/10.37394/23202.2024.23.52 https://wseas.com/journals/systems/2024/b065102-034(2024).pdf
• 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 classes of matrix transforms related to speed-Maddox spaces over ultrametric fieldsNatarajan, Pinnangudi N.; Aasma, AntsActa et commentationes Universitatis Tartuensis de mathematica2025 / p. 79-86 https://doi.org/10.12697/ACUTM.2025.29.05
• 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