@article{AKGWG_1845__2_135646,
     author = {Arnold Adolph Berthold},
     title = {\"uber das {Gesetz} der {Schwangerschaftsdauer}},
     journal = {Abhandlungen der K\"oniglichen Gesellschaft der Wissenschaften in G\"ottingen},
     pages = {181--224},
     publisher = {mathdoc},
     volume = {2},
     year = {1845},
     url = {http://geodesic.mathdoc.fr/item/AKGWG_1845__2_135646/}
}