@article{MZ_1977__157_172603,
     author = {Wolfgang Willems},
     title = {Metrische {G-Moduln} \"uber {K\"orpern} der {Charakteristik} 2.},
     journal = {Mathematische Zeitschrift},
     pages = {131--140},
     publisher = {mathdoc},
     volume = {157},
     year = {1977},
     url = {http://geodesic.mathdoc.fr/item/MZ_1977__157_172603/}
}