@article{EUG_1992_32_a7,
     author = {A. Iserles},
     title = {Efficient {Runge-Kutta} methods for {Hamiltonian} equations},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}},
     pages = {3--20},
     year = {1992},
     volume = {32},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1992_32_a7/}
}