John C. Butcher A Modified Multistep Method for the Numerical Integration of Ordinary Differential Equations. [Citation Graph (0, 0)][DBLP] J. ACM, 1965, v:12, n:1, pp:124-135 [Journal]
John C. Butcher A Multistep Generalization of Runge-Kutta Methods With Four or Five Stages. [Citation Graph (0, 0)][DBLP] J. ACM, 1967, v:14, n:1, pp:84-99 [Journal]