Y. Sugiyama, Nonexistence of global solution to some quasilinear hyperbolic equation, SUT Journal of mathematics, Vol. 47, (2011) 217-227.
K. Kato, Y. Sugiyama, Local existence and uniqueness theory for the second sound equation in one space dimension, Journal of hyperbolic differential equations, Vol. 9, (2012) 177-193.
K. Kato, Y. Sugiyama, Blow up of solutions to the second sound equation in one space dimension, Kyushu journal of mathematics, Vol. 67, (2013) 129-142.
Y. Sugiyama, Global existence of solutions to some quasilinear wave equation in one space dimension, Differential and integral equations, Vol. 26,(2013) 487-504.
M. Yamamoto, K. Kato, Y. Sugiyama, Existence and analyticity of solutions to the drift-diffusion equation with critical dissipation, Hiroshima Mathematical Journal, Vol. 44, (2014) 275-313.
Y. Sugiyama, M. Yamamoto and K. Kato, Local and global solvability and blow up for the drift-diffusionequation with fractional dissipation in the critical space, Journal of Differential Equations, Vol. 258, (2015) 2983-3010.
M. Yamamoto, Y. Sugiyama, Asymptotic behavior of solutions to the drift-diffusion equation with critical dissipation, Annales Henri Poincaré, Vol. 17, (2016) 1331-1352.
Y. Sugiyama, Degeneracy in finite time of 1D quasilinear wave equations, SIAM J. Math. Anal., Vol. 48, (2016) 847-860.
M. Yamamoto, Y. Sugiyama, Asymptotic expansion of solutions to the drift-diffusion equation with fractional dissipation, Nonlinear Analysis Series A: Theory, Methods & Applications, Vol. 141, (2016) 57-87.
Y. Sugiyama, Large time behavior of solutions to 1D quasilinear wave equations, RIMS Kokyuroku Bessatsu, B63 (2017) 113-123.
Y. Sugiyama, Degeneracy in finite time of 1D quasilinear wave equations II, Evolution Equations and Control Theory, Vol 6, (2017) 615-628.
Y. Sugiyama, Singularity formation for the 1D compressible Euler equations with variable damping coefficient, Nonlinear Analysis Series A: Theory, Methods & Applications, Vol. 170, (2018) 70-87.
Y.-G. Lu, Y. Sugiyama , Existence and nonexistence theorems for global weak solutions to quasilinear wave equations for the elasticity, Applied Mathematics Letters, Vol. 84, (2018) 118-123.
M. Yamamoto, Y. Sugiyama, Spatial-decay of solutions to the quasi-geostrophic equation with the critical and the supercritical dissipation. Nonlineality, Vol. 32, (2019) 2467-2480.
Y. Sugiyama, Remark on global existence of solutions to the 1D compressible Euler equation with time-dependent damping, Advanced Studies in Pure Mathematics, Vol. 85, (2020), 379-389.
M. Yamamoto, Y. Sugiyama, Optimal estimates for far field asymptotics of solutions to the quasi-geostrophic equation , Proceedings of the American Mathematical Society Vol. 149, (2021), 1099-1110 .
M. Yamamoto, Y. Sugiyama, Asymptotic stability of stationary solutions to the drift-diffusion model with the fractional dissipation, Journal of Evolution Equations, Vol. 21, (2021), 1383-1471.
Y. Sugiyama, Formation of singularities for a family of 1D quasilinear wave equations, Indiana math. Journal, Vol. 71(6) 2529-2549 2022.
Y. Sugiyama, Local solvability for a quasilinear wave equation with the far files degeneracy: 1D case, Communications in Mathematical Sciences, Vol. 21(1) 219-237 2023 .
Y. Hu, Y. Sugiyama, The classical solvability for a one-dimensional nonlinear thermoelasticity system with the far field degeneracy, Advances in Nonlinear studies 2024.
Y. Sugiyama, Global existence and Blow-up for the 1D damped compressible Euler equations with time and space dependent perturbation, Nonlinear Analysis Series A: Theory, Methods & Applications, Vol. 250, (2025)
Yanbo Hu and Y. Sugiyama, Well-posedness of the initial-boundary value problem for 1D degenerate quasilinear wave equations, Advances in Differential Equations, Vol. 30, 177-206.
Yanbo Hu and Y. Sugiyama, Well-posedness of degenerate initial-boundary value problems to a hyperbolic-parabolic coupled system arising from nematic liquid crystals, Archive for Rational Mechanics and Analysis, Vol. 249, (2025)
Y. Sugiyama, Quasilinear wave equation with the far files degeneracy,
Yanbo Hu and Y. Sugiyama, Loss of regularity for solutions to 1D degenerate quasilinear wave equations