@article{10_4064_aa_8_2_113_122,
     author = {M. Gut},
     title = {Absch\"atzungen f\"ur die {Klassenzahlen} der quadratischen {K\"orper}},
     journal = {Acta Arithmetica},
     pages = {113--122},
     publisher = {mathdoc},
     volume = {8},
     number = {2},
     year = {1962},
     doi = {10.4064/aa-8-2-113-122},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-8-2-113-122/}
}