Tomoyuki TANAKA, Kotaro TSUGAWA. Well-posedness and parabolic smoothing effect for higher order Schrodinger type equations with constant coefficients. Osaka J. Math. 2022. 59. 465-480
Isao Kato, Kotaro Tsugawa. SCATTERING AND WELL-POSEDNESS FOR THE ZAKHAROV SYSTEM AT A CRITICAL SPACE IN FOUR AND MORE SPATIAL DIMENSIONS. DIFFERENTIAL AND INTEGRAL EQUATIONS. 2017. 30. 9-10. 763-794
K. Tsugawa. Local well-posedness and parabolic smoothing effect of fifth order dispersive equations on the torus. RIMS Kokyuroku Bessatsu. 2016. B60. 177-193
Nobu Kishimoto, Kotaro Tsugawa. LOCAL WELL-POSEDNESS FOR QUADRATIC NONLINEAR SCHRODINGER EQUATIONS AND THE "GOOD" BOUSSINESQ EQUATION. DIFFERENTIAL AND INTEGRAL EQUATIONS. 2010. 23. 5-6. 463-493