@article{ETNA_1994__2__a0,
     author = {G\"ortz, Peter and Scherer, Rudolf},
     title = {Reducibility and characterization of symplectic {Runge-Kutta} methods},
     journal = {Electronic transactions on numerical analysis},
     pages = {194--204},
     publisher = {mathdoc},
     volume = {2},
     year = {1994},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_1994__2__a0/}
}