"Yoshiyuki Kagei","On the mathematical analysis of the artificial compressibility method",,"Partial Differ. Equ. Appl.",,"Vol. 2","  Paper No. 65","pp. 19",2021,Sept.
"Yoshiyuki Kagei,Chun-Hsiung  Hsia,Takaaki Nishida,Yuka Teramoto","Singular limit in Hopf bifurcation for doubly diffusive convection equations II: bifurcation and stability",,"J. Math. Fluid Mech","Birkhaeuser Verlag","Vol. 23","No. 3","Page 35",2021,May
"Yoshiyuki Kagei,Chun-Hsiung  Hsia,Takaaki Nishida,Yuka Teramoto","Singular limit in Hopf bifurcation for doubly diffusive convection equations I: linearized analysis at criticality",,"J. Math. Fluid Mech.","Birkhaeuser Verlag","Vol. 23","No. 3","Page 27",2021,May
"Yoshiyuki Kagei","On Stability and Bifurcation in Parallel Flows of Compressible Navier-Stokes Equations",,"Springer Proceedings in Mathematics & Statistics","Springer","Vol. 346",,"pp. 71--93",2021,Apr.
"Yoshiyuki Kagei,Shota Enomoto,Mohamad Nor  Azlan","On the spectral properties for the linearized problem around space-time periodic states of the compressible Navier-Stokes equations",,"Mathematics","MDPI","Vol. 9","No. 7",,2021,Mar.