• Approximation in Banach spaces by summation methods of Fourier expansionsAasma, AntsInt. Conference "Advances in Constructive Approximation" : Nashwille, USA, May 14-17, 2003 : abstracts2003 / [9] p
• Generalized Euler-Knopp method and convergence accelerationMeronen, Olga; Tammeraid, IvarMathematical Modelling and Analysis : abstracts of the 10th International Conference MMA2005AMPCMAM2 : Trakai2005 / p. 78 https://journals.vilniustech.lt/index.php/MMA/article/view/9600
• Generalized Euler-Knopp method and convergence accelerationMeronen, Olga; Tammeraid, IvarMathematical modelling and analysis2006 / 1, p. 87-94 https://journals.vilniustech.lt/index.php/MMA/article/view/9600
• Generalized linear methods and gap Tauberian remainder theoremsMeronen, Olga; Tammeraid, IvarMathematical modelling and analysis2008 / 2, p. 223-232 https://journals.vilniustech.lt/index.php/MMA/article/view/7005
• Generalized Nörlund method and convergence accelerationMeronen, Olga; Tammeraid, IvarMathematical modelling and analysis2007 / 2, p. 195-204 https://journals.vilniustech.lt/index.php/MMA/article/view/7120
• High order iterative methods for decomposition-coordination problemsVaarmann, OtuTechnological and economic development of economy2005 / 4, p. 6 https://www.tandfonline.com/doi/abs/10.1080/13928619.2006.9637723
• High order iterative methods for decomposition-coordination problemsVaarmann, OtuWorkshop of the European Working Group on Metaheuristics "Metaheuristics and Large Scale Optimization"2005 / p. 15 https://www.tandfonline.com/doi/abs/10.1080/13928619.2006.9637723
• Kadhim, Samira Naji; Mohammed Ali, Muna Jasim; Atiya, Zainab Abed. A note on S-acts and bounded linear operators : [review]Zentralblatt MATH2018 / 1 p https://zbmath.org/?q=06928962
• Matrix transformations of summability domains of generalized matrix methods in Banach spacesAasma, AntsRendiconti del circolo matematico di Palermo2009 / 3, p. 467-476
• On a cosine operator function framework of approximation processes in banach spaceKivinukk, Andi; Saksa, Anna; Zeltser, MariaFilomat2019 / p. 4213-4228 https://doi.org/10.2298/FIL1913213K https://www.scopus.com/sourceid/19900192450 https://www.scopus.com/record/display.uri?eid=2-s2.0-85077677690&origin=inward&txGid=e4b38d2a8efeb245b0d39899ba63f264 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=FILOMAT&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000502092100018
• On approximation processes defined by a cosine operator functionKivinukk, Andi; Saksa, Anna; Zeltser, MariaProceedings of the Estonian Academy of Sciences2017 / p. 214-224 https://doi.org/10.3176/proc.2017.2.11 http://www.ester.ee/record=b2355998*est https://artiklid.elnet.ee/record=b2820949*est
• On approximation processes defined by the cosine operator function in a Banach spaceSaksa, Anna; Kivinukk, AndiInternational Conference : Harmonic Analysis and Approximations, VII, Dedicated to 90th Anniversary of Alexandr Talalyan, 16-22 September, 2018 Tsaghkadzor, Armenia : abstracts2018 / p. 95-96 http://mathconf.sci.am/haa2018/images/HAAVIIAbstractsBook.pdf
• On generalized Shannon sampling operators in the cosine operator function frameworkKivinukk, Andi; Tamberg, GertSampling, approximation, and signal analysis : harmonic analysis in the spirit of J. Rowland Higgins2023 / p. 39-68 https://doi.org/10.1007/978-3-031-41130-4_3
• Several remarks on acceleration of convergence using generalized linear methods of summabilityTammeraid, IvarJournal of computational and applied mathematics2003 / p. 365-373 https://www.sciencedirect.com/science/article/pii/S0377042703005399
• Stetigkeitsmodul unf Fourier- Entwicklungen in Banach-RäumenKivinukk, AndiAnnales Universitatis scientiarum Budapestinensis de Rolando Eötvös nominatae. Sectio mathematica1981 / S. 193-204
• Базисы и мультипликаторы : автореферат ... кандидата физико-математических наук (01.01.01)Täht, Toomas1980 https://www.ester.ee/record=b2894983*est
• Матричные преобразования обобщенных последовательностейLamp, JüriОчерки по обработке информации и функциональному анализу1971 / с. 73-80 https://www.ester.ee/record=b1356667*est https://digikogu.taltech.ee/et/Item/a431c49f-a972-4e58-916b-947eea59962d
• О сходимости обобщенного метода СтеффенсенаKoppel, HeinoEesti NSV Teaduste Akadeemia toimetised. Füüsika, matemaatika ja tehnikateaduste seeria = Известия Академии наук Эстонской ССР. Серия физико-математических и технических наук1966 / lk. 531-539 https://www.ester.ee/record=b1264320*est
• Построение некоторых классов интерационных формулKoppel, HeinoПриложения функционального анализа к теории функций и методам вычислений = Funktsionaalanalüüsi rakendused funktsiooniteoorias ja arvutusmeetodites1978 / с. 133-138 https://www.ester.ee/record=b1314722*est
• Совместное приближение элемента банахова пространства и его отображений замкнутом операторомKivinukk, AndiТезисы конференции "Теоретические и прикладные вопросы математики" : 11-12 сентября 19801980 / с. 126-128 https://www.ester.ee/record=b1275697*est
• Теоремы сравнения методов суммирования разложений Фурье в пространстве банахаKivinukk, AndiПриложения функционального анализа к теории функций и методам вычислений = Funktsionaalanalüüsi rakendused funktsiooniteoorias ja arvutusmeetodites1978 / с. 32-39 https://www.ester.ee/record=b1314722*est http://hdl.handle.net/10062/33813
• Теоремы сравнения методом суммирования разложений Фурье в пространстве БанахаKivinukk, AndiПриложения функционального анализа к теории функций и методам вычислений = Funktsionaalanalüüsi rakendused funktsiooniteoorias ja arvutusmeetodites1978 / с. 31-39 https://www.ester.ee/record=b1314722*est