Asymptotic behavior of solutions of a semilinear heat equation with subcritical nonlinearity Tadashi Kawanago — 1996 Annales de l'I.H.P. Analyse non linéaire
Stability estimate for strong solutions of the Navier-Stokes system and its applications. Kawanago, Tadashi — 1998 Electronic Journal of Differential Equations (EJDE) [electronic only]