@article{MZ_1981__176_183635,
     author = {Bert (E.J. Ditters},
     title = {On the {Covariant} {Dieudonn\'e-Module} of an {Abelian} {Variety} of {Dimension} {Two} over {W(k).}},
     journal = {Mathematische Zeitschrift},
     pages = {135--150},
     publisher = {mathdoc},
     volume = {176},
     year = {1981},
     zbl = {0471.14025},
     url = {http://geodesic.mathdoc.fr/item/MZ_1981__176_183635/}
}