An interpolation inequality involving $Log L$ spaces and application to the characterization of blowup behavior in a twodimensional Keller–Segel–Navier–Stokes system
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Hardy–Stein identities and square functions for semigroups
R. Bañuelos, K. Bogdan, T. Luks, Journal of the London Mathematical Society 94 (2016) 462–478.