@article{10_4064_aa_23_1_13_18,
     author = {Heinrich Lang},
     title = {\"Uber {Verallgemeinerte} {Bernoullische} {Zahlen} und die {Klassenzahl} reell-quadratischer {Zahlk\"orper}},
     journal = {Acta Arithmetica},
     pages = {13--18},
     publisher = {mathdoc},
     volume = {23},
     number = {1},
     year = {1973},
     doi = {10.4064/aa-23-1-13-18},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-23-1-13-18/}
}