Stability of Runge-Kutta methods for the generalized pantograph equation. - Toshiyuki Koto (Numerische Mathematik, 1999)

Stability and convergence of staggered Runge-Kutta schemes for semilinear wave equations. - Daisuke Murai; Toshiyuki Koto (J. Comput. Appl. Math., 2011)

Stability of Explicit Symplectic Partitioned Runge-Kutta Methods. - Toshiyuki Koto; Eunjee Song (J. Inform. and Commun. Convergence Engineering, 2014)