@inproceedings{LaburtaSantamaría:3266,
      author       = "Calvo, M. and Laburta Santamaría, María Pilar and
                      Montijano, Juan I.",
      title        = "Initializers for RK-Gauss methods based on
                      pseudo-symplecticity ",
      booktitle    = "J. Comput. Appl. Math.",
      year         = "2006",
}