Energy-preserving Runge-Kutta methodsElena Celledoni, Robert I. McLachlan, David I. McLaren, Brynjulf Owren, G. Reinout W. Quispel and William M. WrightESAIM: M2AN, 43 4 (2009) 645-649DOI: https://doi.org/10.1051/m2an/2009020
