@article{AFM_1967_391-410_a16,
     author = {Seppo Hyyr\"o},
     title = {Zur {Approximation} algebraischer {Zahlen}},
     journal = {Annales Fennici Mathematici},
     publisher = {mathdoc},
     volume = {391-410},
     year = {1967},
     doi = {10.5186/aasfm.1967.394},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1967.394/}
}