@article{MOMA_1972__76_177612,
     author = {J\"urgen Spilker},
     title = {Elliptische {Fixpunkte} symplektischer {Matrizen.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {339--344},
     publisher = {mathdoc},
     volume = {76},
     year = {1972},
     zbl = {0248.20065},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1972__76_177612/}
}