M. V. Babushkin, M. A. Skopina, “Wavelet frames on the sets of $M$-positive vectors”, Zap. Nauchn. Sem. POMI, 539 (2024), 5–30
2020
2.
M. V. Babushkin, “Estimates for the constant in a Jackson type inequality for periodic functions”, Zap. Nauchn. Sem. POMI, 491 (2020), 5–26
2016
3.
M. V. Babushkin, V. V. Zhuk, “On a strong form of asymptotic formulas of Voronovskaya–Bernstein type with pointwise estimate of the remainder term”, Zap. Nauchn. Sem. POMI, 449 (2016), 32–59; J. Math. Sci. (N. Y.), 225:6 (2017), 859–876
M. V. Babushkin, V. V. Zhuk, “On two-sided estimates for some functionals in terms of the best approximations”, Zap. Nauchn. Sem. POMI, 449 (2016), 15–31; J. Math. Sci. (N. Y.), 225:6 (2017), 848–858
M. V. Babushkin, V. V. Zhuk, “Growth of norms in $L_2$ of derivatives of Steklov functions and properties of functions defined by best approximations and Fourier coefficients”, Zap. Nauchn. Sem. POMI, 445 (2016), 5–32; J. Math. Sci. (N. Y.), 222:5 (2017), 525–543
2013
6.
M. V. Babushkin, V. V. Zhuk, “On the constants in inequalities of the generalized Jackson theorem type”, Zap. Nauchn. Sem. POMI, 418 (2013), 28–59; J. Math. Sci. (N. Y.), 200:5 (2014), 532–550
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