| Approximation of unbounded operators by bounded operators in a Hilbert space. VF Babenko, RO Bilichenko Ukrainian Mathematical Journal 61 (2), 2009 | 8 | 2009 |
| Inequalities of Taikov type for self-adjoint operators in Hilbert space VF Babenko, RO Bilichenko Trudy IPMM 21, 11-18, 2010 | 5 | 2010 |
| The best approximation of classes, defined by powers of self-adjoint operators acting in Hilbert space, by other classes VF Babenko, RO Bilichenko Researches in Mathematics 17, 23-30, 2021 | 3 | 2021 |
| Inequality of Taikov type for powers of normal operators in Hilbert space VF Babenko, RO Bilichenko Researches in Mathematics 19, 3-7, 2021 | 3 | 2021 |
| Approximation of unbounded functionals by the bounded ones in Hilbert space VF Babenko, RO Bilichenko Researches in Mathematics 20, 3-10, 2012 | 3 | 2012 |
| Some problems of approximation theory for powers of normal operators in Hilbert space RO Bilichenko Researches in Mathematics 18, 59-71, 2021 | 2 | 2021 |
| Неравенство типа Тайкова для самосопряженных операторов в гильбертовом пространстве ВФ Бабенко, РО Биличенко Труды Института прикладной математики и механики, 2010 | 1 | 2010 |
| Application of spectral decomposition to establish inequalities for operators R Bilichenko, S Zhir Researches in Mathematics 31 (1), 17-22, 2023 | | 2023 |
| In memoriam: Lilia Georgiivna Boitsun, a mathematician and bright person VF Babenko, RO Bilichenko, MB Vakarchuk, OV Kovalenko, SV Konareva, ... Researches in Mathematics 29 (1), 3-10, 2021 | | 2021 |
| Vitalii Pavlovych Motornyi (on occasion of the 80th birthday) VF Babenko, RO Bilichenko, SV Goncharov, OV Kovalenko, SV Konareva, ... Researches in Mathematics 28 (2), 3-9, 2021 | | 2021 |
| Approximation of unbounded functional, defined by grades of normal operator, on the class of elements of Hilbert space RO Bilichenko Researches in Mathematics 24, 3-9, 2016 | | 2016 |
| Refinement of a Hardy–Littlewood–Pólya-type inequality for powers of self-adjoint operators in a Hilbert space. VF Babenko, RO Bilichenko Ukrainian Mathematical Journal 61 (10), 2009 | | 2009 |
