@article{JRAM_1980__320_152300,
     author = {Shinju Kobayashi},
     title = {Divisibilit\'e du nombre de classes des corps ab\'eliens r\'eels.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {142--149},
     publisher = {mathdoc},
     volume = {320},
     year = {1980},
     zbl = {0432.12004},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1980__320_152300/}
}