A new family of Runge-Kutta type methods for the numerical integration of perturbed oscillators. - Ana B. González; Pablo Martín; José-Miguel Farto (Numerische Mathematik, 1999)

Reformulation of the RKGM methods using Scheifele expansions. - Ana B. González; José-Miguel Farto; David J. López (Appl. Math. Lett., 2000)