Masakazu Kato, Hideo Kubo. On the Cauchy Problem for the Nonlinear Wave Equation with Damping and Potential. Trends in Mathematics. 2022. 45-61
Takuto Imai, Masakazu Kato, Hiroyuki Takamura, Kyouhei Wakasa. The lifespan of solutions of semilinear wave equations with the scale-invariant damping in two space dimensions. Journal of Differential Equations. 2020. 269. 10. 8387-8424
Takuto Imai, Masakazu Kato, Hiroyuki Takamura, Kyouhei Wakasa. The sharp lower bound of the lifespan of solutions to semilinear wave equations with low powers in two space dimensions. K.Kato & T.ogawa & T.Ozawa ed. "Asymptotic Analysis for Nonlinear Dispersive and Wave Equations", Advanced Studies in Pure Mathematics. 2019. 81. 31-53
Masakazu Kato, Hiroyuki Takamura, Kyouhei Wakasa. The lifespan of solutions of semilinear wave equations with the scale-invariant damping in one space dimension. Differential and Integral Equations. 2019. 32. 11-12. 659-678