@article{10_21136_MB_2013_143287,
     author = {Lemmermeyer, F.},
     title = {Why is the class number of $\mathbb Q(\root 3\of {11})$ even?},
     journal = {Mathematica Bohemica},
     pages = {149--163},
     year = {2013},
     volume = {138},
     number = {2},
     doi = {10.21136/MB.2013.143287},
     mrnumber = {3112361},
     zbl = {1274.11162},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.2013.143287/}
}