Fourier--Rademacher coefficients of functions in rearrangement-invariant spaces. Astashkin, S.V. — 2000 Siberian Mathematical Journal
Extrapolation functors on a family of scales generated by the real interpolation method. Astashkin, S.V. — 2005 Sibirskij Matematicheskij Zhurnal
Exact K -monotonicity of one class of Banach pairs. Astashkin, S.V. — 2002 Sibirskij Matematicheskij Zhurnal
Strong extrapolation spaces and interpolation. Astashkin, S.V.; Lykov, K.V. — 2009 Sibirskij Matematicheskij Zhurnal
Extrapolatory description for the Lorentz and Marcinkiewicz spaces “close" to L ∞ . Astashkin, S.V.; Lykov, K.V. — 2006 Sibirskij Matematicheskij Zhurnal