@article{10_4153_CJM_1981_006_8,
     author = {Takeuchi, Hiroshi},
     title = {On the {Class-Number} of the {Maximal} {Real} {Subfield} of a {Cyclotomic} {Field}},
     journal = {Canadian journal of mathematics},
     pages = {55--58},
     year = {1981},
     volume = {33},
     number = {1},
     doi = {10.4153/CJM-1981-006-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-006-8/}
}