@article{10_4064_aa_54_1_51_59,
     author = {Winfried Scharlau},
     title = {Generating functions of finitely generated {Witt} rings},
     journal = {Acta Arithmetica},
     pages = {51--59},
     publisher = {mathdoc},
     volume = {54},
     number = {1},
     year = {1989},
     doi = {10.4064/aa-54-1-51-59},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-54-1-51-59/}
}